Home / 8,387.34-12,581.45-2,147.41

Finding the Fourth Proportional to 8,387.34, 12,581.45 and 2,147.41

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Solution

The fourth proportional to 8,387.34, 12,581.45 and 2,147.41 is: 3,221.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.34 : 12,581.45 = 2,147.41 : x
  2. Step 2: Convert to fraction form
    8,387.34/12,581.45 = 2,147.41/x
  3. Step 3: Cross multiply
    8,387.34x = 12,581.45 × 2,147.41
  4. Step 4: Simplify right side
    8,387.34x = 27,017,531.54
  5. Step 5: Solve for x
    x = 27,017,531.54/8,387.34
  6. Step 6: Final answer
    x = 3,221.23

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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.