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Finding the Fourth Proportional to 8,105.91, 11,186.17 and 4,379.91

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Solution

The fourth proportional to 8,105.91, 11,186.17 and 4,379.91 is: 6,044.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.91 : 11,186.17 = 4,379.91 : x
  2. Step 2: Convert to fraction form
    8,105.91/11,186.17 = 4,379.91/x
  3. Step 3: Cross multiply
    8,105.91x = 11,186.17 × 4,379.91
  4. Step 4: Simplify right side
    8,105.91x = 48,994,364.95
  5. Step 5: Solve for x
    x = 48,994,364.95/8,105.91
  6. Step 6: Final answer
    x = 6,044.28

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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.