# How do you solve the proportion 186/3.1=27/y?

If $\frac{186}{3.1} = \frac{27}{y}$
$\frac{y}{27} = \frac{3.1}{186}$
$y = \frac{3.1}{186} \cdot 27 = 0.45$
$\textcolor{w h i t e}{\text{xxxxxxxx}}$(yes, I "cheated" and use a calculator)