Are these ratios 2/4 and 20/36 proportional and how do i show the work

Question

Cobb

Mathematics

13 September, 18:38

Are these ratios 2/4 and 20/36 proportional and how do i show the work

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Answers (2)

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Valerie Young · Answer 1

Proportional ratios are the same. 2:4=1:2 and 20:36=5:9 are not the same.

In general

a:b = c:d

when ad = bc

Here 2 (36) = 72 is not equal to 4 (20) = 80, so the ratios are not the same.

Kaiser · Answer 2

Proportional ratios are the same. 2:4=1:2 and 20:36=5:9 are not the same.

In general

a:b = c:d

when ad = bc

Here 2 (36) = 72 is not equal to 4 (20) = 80, so the ratios are not the same.