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Finding the Fourth Proportional to 7,921.39, 11,882.09 and 2,375.32

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Solution

The fourth proportional to 7,921.39, 11,882.09 and 2,375.32 is: 3,562.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.39 : 11,882.09 = 2,375.32 : x
  2. Step 2: Convert to fraction form
    7,921.39/11,882.09 = 2,375.32/x
  3. Step 3: Cross multiply
    7,921.39x = 11,882.09 × 2,375.32
  4. Step 4: Simplify right side
    7,921.39x = 28,223,766.02
  5. Step 5: Solve for x
    x = 28,223,766.02/7,921.39
  6. Step 6: Final answer
    x = 3,562.98

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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.