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Finding the Fourth Proportional to 11,998.40, 17,997.59 and 3,234.20

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Solution

The fourth proportional to 11,998.40, 17,997.59 and 3,234.20 is: 4,851.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.40 : 17,997.59 = 3,234.20 : x
  2. Step 2: Convert to fraction form
    11,998.40/17,997.59 = 3,234.20/x
  3. Step 3: Cross multiply
    11,998.40x = 17,997.59 × 3,234.20
  4. Step 4: Simplify right side
    11,998.40x = 58,207,723.68
  5. Step 5: Solve for x
    x = 58,207,723.68/11,998.40
  6. Step 6: Final answer
    x = 4,851.29

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Similar ratio
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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.