4:3

Do you mean the ratio 4:3? Here are the basics and quick examples to refresh you for exams. Key ideas - A:B = 4:3 means A = 4k and B = 3k for some common factor k. - A:B = 4:3 implies A/B = 4/3 ≈ 1.333. - If A:B = 4:3 and A+B = total, then A = (4/7) · total and B = (3/7) · total. - If you know A = 4k, B = 3k, any given A or B lets you find k. Examples 1) A:B = 4:3 and A+B = 70 - 4k + 3k = 70 → 7k = 70 → k = 10 - A = 4k = 40, B = 3k = 30 2) A:B = 4:3 and A = 48 - A = 4k → 4k = 48 → k = 12 - B = 3k = 36 3) Width:Height = 4:3 (aspect ratio). If height = 200, width = (4/3) × 200 = 266.67 4) If A:B = 4:3 and total A+B = 7x - A = 4x, B = 3x - If total is, say, 7x = 210, then x = 30 → A = 120, B = 90 Would you like me to tailor this to a specific type of problem (pure algebra, geometry, screen sizes, mixtures), or give you a couple of practice questions with solutions? If you have a concrete problem, share it and I’ll walk you through.