Determine if the following ratio form a proportion
2 kg : 80 kg :: 25 g : 625 kg

The correct answer is No

2 kg : 80 kg :: 25 g : 625 kg

2 kg : 80 kg

⇒ $\dfrac{2}{80}$ = $\dfrac{1}{40}$


25 g : 625 kg

⇒ 25 g : 625 kg = $\dfrac{25}{625}$ = $\dfrac{1}{25}$


∴ 2 kg : 80 kg :: 25 g : 625 kg are not in proportion.