Home / 8,319.11-12,473.12-3,387.42

Finding the Fourth Proportional to 8,319.11, 12,473.12 and 3,387.42

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Solution

The fourth proportional to 8,319.11, 12,473.12 and 3,387.42 is: 5,078.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.11 : 12,473.12 = 3,387.42 : x
  2. Step 2: Convert to fraction form
    8,319.11/12,473.12 = 3,387.42/x
  3. Step 3: Cross multiply
    8,319.11x = 12,473.12 × 3,387.42
  4. Step 4: Simplify right side
    8,319.11x = 42,251,704.62
  5. Step 5: Solve for x
    x = 42,251,704.62/8,319.11
  6. Step 6: Final answer
    x = 5,078.88

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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.