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Finding the Fourth Proportional to 8,878.86, 13,321.44 and 3,948.06

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Solution

The fourth proportional to 8,878.86, 13,321.44 and 3,948.06 is: 5,923.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.86 : 13,321.44 = 3,948.06 : x
  2. Step 2: Convert to fraction form
    8,878.86/13,321.44 = 3,948.06/x
  3. Step 3: Cross multiply
    8,878.86x = 13,321.44 × 3,948.06
  4. Step 4: Simplify right side
    8,878.86x = 52,593,844.41
  5. Step 5: Solve for x
    x = 52,593,844.41/8,878.86
  6. Step 6: Final answer
    x = 5,923.49

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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.