Home / 3,079.11-4,620.21-1,231.55

Finding the Fourth Proportional to 3,079.11, 4,620.21 and 1,231.55

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Solution

The fourth proportional to 3,079.11, 4,620.21 and 1,231.55 is: 1,847.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.11 : 4,620.21 = 1,231.55 : x
  2. Step 2: Convert to fraction form
    3,079.11/4,620.21 = 1,231.55/x
  3. Step 3: Cross multiply
    3,079.11x = 4,620.21 × 1,231.55
  4. Step 4: Simplify right side
    3,079.11x = 5,690,037.82
  5. Step 5: Solve for x
    x = 5,690,037.82/3,079.11
  6. Step 6: Final answer
    x = 1,847.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.