Home / 8,387.43-12,581.01-2,147.39

Finding the Fourth Proportional to 8,387.43, 12,581.01 and 2,147.39

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Solution

The fourth proportional to 8,387.43, 12,581.01 and 2,147.39 is: 3,221.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.43 : 12,581.01 = 2,147.39 : x
  2. Step 2: Convert to fraction form
    8,387.43/12,581.01 = 2,147.39/x
  3. Step 3: Cross multiply
    8,387.43x = 12,581.01 × 2,147.39
  4. Step 4: Simplify right side
    8,387.43x = 27,016,335.06
  5. Step 5: Solve for x
    x = 27,016,335.06/8,387.43
  6. Step 6: Final answer
    x = 3,221.05

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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.