\[\frac{3}{4} = \frac{18}{24};\ \ \frac{5}{6} = \frac{20}{24};\ \ \frac{3}{8} = \frac{9}{24};\ \ \]
\[\text{\ \ \ }\frac{7}{12} = \frac{14}{24}\]
\[\Rightarrow \frac{5}{6} > \frac{3}{4} > \frac{7}{12} > \frac{3}{8}.\]