Given four rational number are,
$$(- 5 / 11), (- 1 / 2), (- 4 / 9), (- 7 / 3)$$
Among the given numbers,
$$- 7 / 3$$ is different from the other three numbers.
Because in $$- 7 / 3$$ its denominator is less than its numerator
In other numbers, denominators are greater than their numerators respectively.