Home / 7,242.20-10,869.82-3,781.88

Finding the Fourth Proportional to 7,242.20, 10,869.82 and 3,781.88

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Solution

The fourth proportional to 7,242.20, 10,869.82 and 3,781.88 is: 5,676.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242.20 : 10,869.82 = 3,781.88 : x
  2. Step 2: Convert to fraction form
    7,242.20/10,869.82 = 3,781.88/x
  3. Step 3: Cross multiply
    7,242.20x = 10,869.82 × 3,781.88
  4. Step 4: Simplify right side
    7,242.20x = 41,108,354.86
  5. Step 5: Solve for x
    x = 41,108,354.86/7,242.20
  6. Step 6: Final answer
    x = 5,676.22

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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.