\frac{ρ_{1}}{ρ_{2}} = \frac{1}{2}, \frac{ρ_{1}}{ρ_{3}} = \frac{1}{3}, \frac{ρ_{2}}{ρ_{3}} = \frac{2}{3}

${\frac{\rho_1}{\rho_2}=\frac{1}{2}, \quad \quad \frac{\rho_1}{\rho_3}=\frac{1}{3}, \quad \quad \frac{\rho_2}{\rho_3}=\frac{2}{3}}$

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