If three successive terms of a G.P. with common ratio r (r > 1) are the lengths of the sides of a triangle and [ r ] denotes the greatest integer…

If three successive terms of a G.P. with common ratio r (r > $\displaystyle 1$) are the lengths of the sides of a triangle and $\displaystyle [\mathrm{r}]$ denotes the greatest integer less than or equal to r, then $\displaystyle 3[\mathrm{r}]+[-\mathrm{r}]$ is equal to $\displaystyle \_\_\_\_$.