To divide 4 by \( \frac{3}{4} \), you can multiply 4 by the reciprocal of \( \frac{3}{4} \):
\[ 4 \div \frac{3}{4} = 4 \times \frac{4}{3} \]
Now, perform the multiplication:
\[ 4 \times \frac{4}{3} = \frac{16}{3} \]
To express this as a mixed number, you can divide 16 by 3:
\[ 16 \div 3 = 5 \quad \text{with a remainder of } 1 \]
Thus, you can write this as:
\[ \frac{16}{3} = 5 \frac{1}{3} \]
So, the final answer is:
\[ 4 \div \frac{3}{4} = 5 \frac{1}{3} \]