Match the following figures to the fractions represented by their shaded(orange) part.

Out of the 4 identical parts in the figure, 2 are painted orange.
Hence, $\frac{2}{4}=\frac{2÷2}{4÷2}=\frac{1}{2}$ of the figure is painted orange.

Out of the 9 identical parts in the figure, 3 are painted orange.
Hence, $\frac{3}{9}=\frac{3÷3}{9÷3}=\frac{1}{3}$ of the figure is painted orange.

Out of the 16 identical parts in the figure, 12 are painted orange.
Hence, $\frac{12}{16}=\frac{12÷4}{16÷4}=\frac{3}{4}$ of the figure is painted orange.