3:5 =27 : n
You asked:
Solve \(3 : 5=27 : n\) for the variable \(n\).
MathBot Answer:
$$\begin{aligned}n &= 45\end{aligned}$$
Express both ratios as fractions. \[\frac{3}{5} = \frac{27}{n}\]
Cross-multiply and solve for the unknown. $$\begin{aligned}\frac{3}{5} &= \frac{27}{n} \\ 3 n &= 135 \\ n &&= 45 \end{aligned}$$