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Finding the Fourth Proportional to 8,001.88, 11,998.98 and 3,781.62

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Solution

The fourth proportional to 8,001.88, 11,998.98 and 3,781.62 is: 5,670.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,001.88 : 11,998.98 = 3,781.62 : x
  2. Step 2: Convert to fraction form
    8,001.88/11,998.98 = 3,781.62/x
  3. Step 3: Cross multiply
    8,001.88x = 11,998.98 × 3,781.62
  4. Step 4: Simplify right side
    8,001.88x = 45,375,513.30
  5. Step 5: Solve for x
    x = 45,375,513.30/8,001.88
  6. Step 6: Final answer
    x = 5,670.61

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1.5x scale

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.