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Finding the Fourth Proportional to 8,873.88, 13,314.06 and 3,939.90

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Solution

The fourth proportional to 8,873.88, 13,314.06 and 3,939.90 is: 5,911.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,873.88 : 13,314.06 = 3,939.90 : x
  2. Step 2: Convert to fraction form
    8,873.88/13,314.06 = 3,939.90/x
  3. Step 3: Cross multiply
    8,873.88x = 13,314.06 × 3,939.90
  4. Step 4: Simplify right side
    8,873.88x = 52,456,064.99
  5. Step 5: Solve for x
    x = 52,456,064.99/8,873.88
  6. Step 6: Final answer
    x = 5,911.29

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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.