Question

Which is a valid proportion? 3/4=21/28 5/6=29/30 4/7=16/49 2/5=12/15

Answer 1

3/4=21/28

Explanation:

This is because 3×7=21 and 4×7=28

Both numbers in the original fraction must be multiplied by the same number to get the equivalent fraction.

Answer 2

A valid proportion would be 3/4=21/28.

Explanation:

You would multiply both the 3 & 4 is 3/4 by 7 to get 21/28.