Question

the figures below are similar. use proportions to find the length of n. 4 8 9 n n = ?

Explanation:

Step1: Set up proportion

Since the figures are similar, the ratios of corresponding sides are equal. So we have $\frac{4}{9}=\frac{8}{n}$.

Step2: Cross - multiply

$4\times n=9\times8$.

Step3: Solve for n

$4n = 72$, then $n=\frac{72}{4}=18$.

Answer:

18