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Question
Find the missing number in the box in the proportions:
`3/8 = square/20`
Solution
In order to get the missing number, we consider the fact that 4 × 5 = 20, i.e., we get 20 when we multiply 5 by 4. This indicates that to get the missing number, 3 must also be multiplied by 4.
When we multiply, we have, 3 × 4 = 12
Hence, the ratio is `12/20`.
∴ `3/5 = 12/20`
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