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Finding the Fourth Proportional to 8,755.88, 13,134 and 2,912.54

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Solution

The fourth proportional to 8,755.88, 13,134 and 2,912.54 is: 4,368.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.88 : 13,134 = 2,912.54 : x
  2. Step 2: Convert to fraction form
    8,755.88/13,134 = 2,912.54/x
  3. Step 3: Cross multiply
    8,755.88x = 13,134 × 2,912.54
  4. Step 4: Simplify right side
    8,755.88x = 38,253,300.36
  5. Step 5: Solve for x
    x = 38,253,300.36/8,755.88
  6. Step 6: Final answer
    x = 4,368.87

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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.