Home / 8,381.28-12,572.52-3,187.08

Finding the Fourth Proportional to 8,381.28, 12,572.52 and 3,187.08

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Solution

The fourth proportional to 8,381.28, 12,572.52 and 3,187.08 is: 4,780.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,381.28 : 12,572.52 = 3,187.08 : x
  2. Step 2: Convert to fraction form
    8,381.28/12,572.52 = 3,187.08/x
  3. Step 3: Cross multiply
    8,381.28x = 12,572.52 × 3,187.08
  4. Step 4: Simplify right side
    8,381.28x = 40,069,627.04
  5. Step 5: Solve for x
    x = 40,069,627.04/8,381.28
  6. Step 6: Final answer
    x = 4,780.85

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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.