# How do you use cross products to solve 15/4=9/(2n)?

May 12, 2017

$\frac{6}{5}$

#### Explanation:

$\frac{15}{4} \cdot 4 \cdot 2 n = \frac{9}{2 n} \cdot 4 \cdot 2 n$

$15 \cdot 2 n = 9 \cdot 4$

$30 n = 36$

$n = 1.2$