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Finding the Fourth Proportional to 5,581.91, 8,373.11 and 1,421.96

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Solution

The fourth proportional to 5,581.91, 8,373.11 and 1,421.96 is: 2,132.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.91 : 8,373.11 = 1,421.96 : x
  2. Step 2: Convert to fraction form
    5,581.91/8,373.11 = 1,421.96/x
  3. Step 3: Cross multiply
    5,581.91x = 8,373.11 × 1,421.96
  4. Step 4: Simplify right side
    5,581.91x = 11,906,178.52
  5. Step 5: Solve for x
    x = 11,906,178.52/5,581.91
  6. Step 6: Final answer
    x = 2,132.99

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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.