Home / 8,691.20-13,037.49-3,425.85

Finding the Fourth Proportional to 8,691.20, 13,037.49 and 3,425.85

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Solution

The fourth proportional to 8,691.20, 13,037.49 and 3,425.85 is: 5,139.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.20 : 13,037.49 = 3,425.85 : x
  2. Step 2: Convert to fraction form
    8,691.20/13,037.49 = 3,425.85/x
  3. Step 3: Cross multiply
    8,691.20x = 13,037.49 × 3,425.85
  4. Step 4: Simplify right side
    8,691.20x = 44,664,467.99
  5. Step 5: Solve for x
    x = 44,664,467.99/8,691.20
  6. Step 6: Final answer
    x = 5,139.05

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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.