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Finding the Fourth Proportional to 7,860.73, 11,781.03 and 3,691.52

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Solution

The fourth proportional to 7,860.73, 11,781.03 and 3,691.52 is: 5,532.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.73 : 11,781.03 = 3,691.52 : x
  2. Step 2: Convert to fraction form
    7,860.73/11,781.03 = 3,691.52/x
  3. Step 3: Cross multiply
    7,860.73x = 11,781.03 × 3,691.52
  4. Step 4: Simplify right side
    7,860.73x = 43,489,907.87
  5. Step 5: Solve for x
    x = 43,489,907.87/7,860.73
  6. Step 6: Final answer
    x = 5,532.56

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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.