The first three spectral lines of H-atom in the Balmer series are given $\lambda$ 1, $\lambda$ 2, $\lambda$ 3 considering the Bohr atomic model, the wave lengths of first and third spectral lines $$\left( \frac{\lambda_{1} }{\lambda_{3} } \right)$$ are related by a factor of approximately 'x'$\times$ 10 $-$ 1. The value of x, to the nearest integer, is $\underline{\hspace{2cm}}$.