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Finding the Fourth Proportional to 7,911.97, 11,867.96 and 3,234.18

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Solution

The fourth proportional to 7,911.97, 11,867.96 and 3,234.18 is: 4,851.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.97 : 11,867.96 = 3,234.18 : x
  2. Step 2: Convert to fraction form
    7,911.97/11,867.96 = 3,234.18/x
  3. Step 3: Cross multiply
    7,911.97x = 11,867.96 × 3,234.18
  4. Step 4: Simplify right side
    7,911.97x = 38,383,171.46
  5. Step 5: Solve for x
    x = 38,383,171.46/7,911.97
  6. Step 6: Final answer
    x = 4,851.28

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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.