Question

4 divided by 3 fourths

Answer 1

4 divided by 3/4 is equivalent to 4 times 4/3 which is equal to 16/3 or 5 1/3

Answer 2

4 is also written as $\frac{4}{1}$. to divide by a fraction flip it upside down! 3 fourths, $\frac{3}{4}$ becomes $\frac{4}{3}$.

now multiply those two fractions. 
$\frac{4}{1}$ multiplied by $\frac{4}{3}$ is just multiplying the two top numbers and the two bottom numbers. 
4 times 4 is 16. 
1 times 3 is 3. 
the answer is $\frac{16}{3}$, or 5$\frac{1}{3}$.