3\4: 3

The expression "3/4: 3" generally relates to a division or a ratio. It can be interpreted in a couple of ways.

1. As a Ratio: The expression can be interpreted as the ratio of \( \frac{3}{4} \) to \( 3 \). To express this as a simplified fraction, you would write it as:

   \[ \frac{\frac{3}{4}}{3} = \frac{3}{4} \times \frac{1}{3} = \frac{3}{12} = \frac{1}{4} \]

2. As a Division: If you are viewing it as "3/4 divided by 3," it represents the same calculation:

   \[ \frac{3}{4} \div 3 = \frac{3}{4} \times \frac{1}{3} = \frac{3}{12} = \frac{1}{4} \]

In both interpretations, the answer simplifies to \( \frac{1}{4} \). If you meant something different, please provide additional context!