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Finding the Fourth Proportional to 4,998.49, 7,499.90 and 2,691.61

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Solution

The fourth proportional to 4,998.49, 7,499.90 and 2,691.61 is: 4,038.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,998.49 : 7,499.90 = 2,691.61 : x
  2. Step 2: Convert to fraction form
    4,998.49/7,499.90 = 2,691.61/x
  3. Step 3: Cross multiply
    4,998.49x = 7,499.90 × 2,691.61
  4. Step 4: Simplify right side
    4,998.49x = 20,186,792.38
  5. Step 5: Solve for x
    x = 20,186,792.38/4,998.49
  6. Step 6: Final answer
    x = 4,038.58

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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.