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Finding the Fourth Proportional to 7,184.52, 10,780.20 and 3,721.76

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Solution

The fourth proportional to 7,184.52, 10,780.20 and 3,721.76 is: 5,584.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,184.52 : 10,780.20 = 3,721.76 : x
  2. Step 2: Convert to fraction form
    7,184.52/10,780.20 = 3,721.76/x
  3. Step 3: Cross multiply
    7,184.52x = 10,780.20 × 3,721.76
  4. Step 4: Simplify right side
    7,184.52x = 40,121,317.15
  5. Step 5: Solve for x
    x = 40,121,317.15/7,184.52
  6. Step 6: Final answer
    x = 5,584.41

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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.