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Finding the Fourth Proportional to 8,781.41, 13,164.12 and 3,230.89

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Solution

The fourth proportional to 8,781.41, 13,164.12 and 3,230.89 is: 4,843.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.41 : 13,164.12 = 3,230.89 : x
  2. Step 2: Convert to fraction form
    8,781.41/13,164.12 = 3,230.89/x
  3. Step 3: Cross multiply
    8,781.41x = 13,164.12 × 3,230.89
  4. Step 4: Simplify right side
    8,781.41x = 42,531,790.76
  5. Step 5: Solve for x
    x = 42,531,790.76/8,781.41
  6. Step 6: Final answer
    x = 4,843.39

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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.