\[3\frac{1}{8}\ :3\frac{3}{4} = x\ :0,6\]
\[3\frac{3}{4}x = 3\frac{1}{8} \cdot 0,6\]
\[\frac{15}{4}x = \frac{25}{8} \cdot \frac{3}{5}\]
\[x = \frac{25 \cdot 3 \cdot 4}{8 \cdot 5 \cdot 15}\]
\[x = \frac{1}{2} = 0,5.\]
\[Ответ:x = 0,5.\]