Selina solutions for Mathematics [English] Class 6 chapter 12 - Proportion (Including Word Problems) [Latest edition]

In the following, check whether or not the given ratios form a proportion:

8 : 16 and 12 : 15

In the following, check whether or not the given ratios form a proportion:

16 : 28 and 24 : 42

In the following, check whether or not the given ratios form a proportion:

12 ÷ 3 and 8 ÷ 2

In the following, check whether or not the given ratios form a proportion:

25 : 40 and 20 : 32

In the following, check whether or not the given ratios form a proportion:

`15/18` and `10/12`

In the following, check whether or not the given ratios form a proportion:

`7/8` and 14 : 16

Find the value of x of the following proportion:

x : 4 = 6 : 8

Find the value of x of the following proportion:

14 : x = 7 : 9

Find the value of x of the following proportion:

4 : 6 = x : 18

Find the value of x of the following proportion:

8 : 10 = x : 25

Find the value of x of the following proportion:

5 : 15 = 4 : x

Find the value of x of the following proportion:

16 : 24 = 6 : x

Find the value of x so that the given four numbers are in proportion:

x, 6, 10 and 15

Find the value of x so that the given four numbers are in proportion:

x, 4, 15 and 30

Find the value of x so that the given four numbers are in proportion:

2, x, 10 and 25

Find the value of x so that the given four numbers are in proportion:

4, x, 6 and 18

Find the value of x so that the given four numbers are in proportion:

9, 12, x and 8

Find the value of x so that the given four numbers are in proportion:

4, 10, 36 and x

Find the value of x so that the given four numbers are in proportion:

7, 21, x and 45

Find the value of x so that the given four numbers are in proportion:

6, 8, 12 and x

The first, second, and fourth terms of a proportion are 6, 18, and 75, respectively. Find its third term.

Find the second term of the proportion whose first, third, and fourth terms are 9, 8, and 24 respectively.

Find the fourth term of the proportion whose first, second, and third terms are 18, 27, and 32 respectively.

The ratio of the length and the width of a school ground is 5 : 2. Find the length, if the width is 40 metres.

The ratio of the sale of eggs on a Sunday and that of the whole week at a grocery shop was 2 : 9. If the total value of the sale of eggs in the same week was Rs 360, find the value of the sale of eggs that Sunday.

The ratio of copper and zinc in an alloy is 9 : 8. If the weight of zinc, in the alloy, is 9.6 kg; find the weight of copper in the alloy.

The ratio of the number of girls to the number of boys in a school is 2 : 5. If the number of boys is 225; find:
(i) the number of girls in the school.
(ii) the number of students in the school.

In a class, one out of every 5 students pass. If there are 225 students in all the sections of a class, find how many pass?

Make set of all possible proportions from the numbers 15, 18, 35 and 42.

If x, y, and z are in continued proportion, then which of the following is true:

x : y = x : z

If x, y, and z are in continued proportion, then which of the following is true:

x : x = z : y

If x, y, and z are in continued proportion, then which of the following is true:

x : y = y : z

If x, y, and z are in continued proportion, then which of the following is true:

y : x = y : z

Which of the following numbers are in continued proportion:

3, 6 and 15

Which of the following numbers are in continued proportion:

15, 45 and 48

Which of the following numbers are in continued proportion:

6, 12 and 24

Which of the following numbers are in continued proportion:

12, 18 and 27

Find the mean proportion between 3 and 27

Find the mean proportion between 0.06 and 0.96

Find the third proportional to 36, 18

Find the third proportional to 5.25, 7

Find the third proportional to ₹1.60, ₹0.40

The ratio between 7 and 5 is same as the ratio between ₹ x and ₹ 20.50; find the value of x.

If (4x + 3y) : (3x + 5y) = 6 : 7, find x : y

If (4x + 3y) : (3x + 5y) = 6 : 7, find x, if y = 10

If (4x + 3y) : (3x + 5y) = 6 : 7, find y, if x = 27

If `(2"y"+5"x")/(3"y"-5"x")=2 1/2`, find x : y

If `(2"y"+5"x")/(3"y"-5"x")=2 1/2`, find x, if y = 70

If `(2"y"+5"x")/(3"y"-5"x")=2 1/2`, find y, if x = 33

Are the following numbers in proportion 32, 40, 48 and 60?

Are the following numbers in proportion 12, 15, 18 and 20?

Find the value of x of the following such that the given numbers are in proportion.

14, 42, x and 75

Find the value of x of the following such that the given numbers are in proportion.

45, 135, 90 and x

The costs of the two articles are in the ratio 7 : 4. If the cost of the first article is Rs. 2,800; find the cost of the second article.

The ratio of the length and the width of a rectangular sheet of paper is 8 : 5. If the width of the sheet is 17.5 cm; find the length.

The ages of A and B are in the ratio 6 : 5. If A’s age is 18 years, find the age of B.

A sum of Rs. 10, 500 is divided among A, B and C in the ratio 5 : 6 : 4. Find the share of each.

Do the ratios 15 cm to 2 m and 10 sec to 3 minutes form a proportion?

Do the ratios 2 kg : 80 kg and 25 g : 625 g form a proportion?

10 kg of sugar cost ₹ 350. If x kg sugar of the same kind costs ₹ 175, find the value of x

The length of two ropes are in the ratio 7 : 5. Find the length of:
(i) shorter rope, if the longer one is 22.5 m
(ii) longer rope, if the shorter is 9.8 m.

If 4, x and 9 are in continued proportion, find the value of x.

If 25, 35 and x are in continued proportion, find the value of x.