Расположите в порядке возрастания числа: 3/8, 5/6, 7/9, 1/4.

\[\frac{3}{8} = \frac{27}{72};\ \ \ \frac{5}{6} = \frac{60}{72};\ \ \ \frac{7}{9} = \frac{56}{72};\]

\[\text{\ \ }\frac{1}{4} = \frac{18}{72}\]

\[\Rightarrow \frac{1}{4} < \ \frac{3}{8} < \ \ \frac{7}{9} < \ \ \frac{5}{6}.\]