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Finding the Fourth Proportional to 8,105.81, 11,186.03 and 4,379.81

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Solution

The fourth proportional to 8,105.81, 11,186.03 and 4,379.81 is: 6,044.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.81 : 11,186.03 = 4,379.81 : x
  2. Step 2: Convert to fraction form
    8,105.81/11,186.03 = 4,379.81/x
  3. Step 3: Cross multiply
    8,105.81x = 11,186.03 × 4,379.81
  4. Step 4: Simplify right side
    8,105.81x = 48,992,724.97
  5. Step 5: Solve for x
    x = 48,992,724.97/8,105.81
  6. Step 6: Final answer
    x = 6,044.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.