Question

Which of the following ratio form a proportion:

$3:9$ and $8:24$.

Answer 1

Checking whether the ratios are in proportion or not :

The ratios $a:b$ and $c:d$ are said to be in proportion if $a:b$ and $c:d$ are equivalent ratios.

Now, taking both the ratios in their lowest form.

$3:9=1:3$ and $8:24=1:3$.

Since, the ratios are equivalent ratios.

Hence, the given ratios are equivalent and they are in proportion.