4 : 2

2:1

Reason: gcd(4, 2) = 2, divide both terms by 2 → 4/2 : 2/2 = 2 : 1.

If you want it in other forms:

• First to second as a fraction: 4/2 = 2
• Second to first as a fraction: 2/4 = 1/2
• As percentages of the total (4 + 2 = 6 parts): first = 4/6 ≈ 66.67%, second = 2/6 ≈ 33.33%

Need it for a specific context (mixtures, proportions, etc.)? I can help with that.