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Finding the Fourth Proportional to 3,996.96, 5,997.86 and 1,531.99

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Solution

The fourth proportional to 3,996.96, 5,997.86 and 1,531.99 is: 2,298.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.96 : 5,997.86 = 1,531.99 : x
  2. Step 2: Convert to fraction form
    3,996.96/5,997.86 = 1,531.99/x
  3. Step 3: Cross multiply
    3,996.96x = 5,997.86 × 1,531.99
  4. Step 4: Simplify right side
    3,996.96x = 9,188,661.54
  5. Step 5: Solve for x
    x = 9,188,661.54/3,996.96
  6. Step 6: Final answer
    x = 2,298.91

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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.