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Finding the Fourth Proportional to 8,860.61, 13,281.80 and 3,932.57

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Solution

The fourth proportional to 8,860.61, 13,281.80 and 3,932.57 is: 5,894.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860.61 : 13,281.80 = 3,932.57 : x
  2. Step 2: Convert to fraction form
    8,860.61/13,281.80 = 3,932.57/x
  3. Step 3: Cross multiply
    8,860.61x = 13,281.80 × 3,932.57
  4. Step 4: Simplify right side
    8,860.61x = 52,231,588.56
  5. Step 5: Solve for x
    x = 52,231,588.56/8,860.61
  6. Step 6: Final answer
    x = 5,894.81

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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.