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Finding the Fourth Proportional to 8,387.12, 12,581.90 and 4,000.98

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Solution

The fourth proportional to 8,387.12, 12,581.90 and 4,000.98 is: 6,002.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.12 : 12,581.90 = 4,000.98 : x
  2. Step 2: Convert to fraction form
    8,387.12/12,581.90 = 4,000.98/x
  3. Step 3: Cross multiply
    8,387.12x = 12,581.90 × 4,000.98
  4. Step 4: Simplify right side
    8,387.12x = 50,339,930.26
  5. Step 5: Solve for x
    x = 50,339,930.26/8,387.12
  6. Step 6: Final answer
    x = 6,002.05

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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.