Answer
x=6.429
Work Step by Step
To solve for x in the equation $\frac{7}{5}$=$\frac{9}{x}$ we'll first cross multiply which will result in
(7)(x)=(9)(5)
7x=45
Then, to solve for x, we'll divide by 7 on both sides of the equation, so
$\frac{7x}{7}$=$\frac{45}{7}$, and
x=$\frac{45}{7}$, which, rounded to the nearest thousandth, is 6.429