Home / 8,371.20-12,553.12-4,209.60

Finding the Fourth Proportional to 8,371.20, 12,553.12 and 4,209.60

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Solution

The fourth proportional to 8,371.20, 12,553.12 and 4,209.60 is: 6,312.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,371.20 : 12,553.12 = 4,209.60 : x
  2. Step 2: Convert to fraction form
    8,371.20/12,553.12 = 4,209.60/x
  3. Step 3: Cross multiply
    8,371.20x = 12,553.12 × 4,209.60
  4. Step 4: Simplify right side
    8,371.20x = 52,843,613.95
  5. Step 5: Solve for x
    x = 52,843,613.95/8,371.20
  6. Step 6: Final answer
    x = 6,312.55

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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.