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Finding the Fourth Proportional to 5,101.53, 7,655.13 and 2,761.50

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Solution

The fourth proportional to 5,101.53, 7,655.13 and 2,761.50 is: 4,143.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,101.53 : 7,655.13 = 2,761.50 : x
  2. Step 2: Convert to fraction form
    5,101.53/7,655.13 = 2,761.50/x
  3. Step 3: Cross multiply
    5,101.53x = 7,655.13 × 2,761.50
  4. Step 4: Simplify right side
    5,101.53x = 21,139,641.50
  5. Step 5: Solve for x
    x = 21,139,641.50/5,101.53
  6. Step 6: Final answer
    x = 4,143.78

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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.