A point source emits sound equally in all directions in a non-absorbing medium. Two points, \(P\) and \(Q\), are at distances of \(2\) m and \(3\) m, respectively, from the source. The ratio of the intensities of the waves at \(P\) and \(Q\) is:
1. \(3:2\)
2. \(2:3\)
3. \(9:4\)
4. \(4:9\)