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Finding the Fourth Proportional to 8,753.26, 13,129.86 and 2,179.44

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Solution

The fourth proportional to 8,753.26, 13,129.86 and 2,179.44 is: 3,269.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,753.26 : 13,129.86 = 2,179.44 : x
  2. Step 2: Convert to fraction form
    8,753.26/13,129.86 = 2,179.44/x
  3. Step 3: Cross multiply
    8,753.26x = 13,129.86 × 2,179.44
  4. Step 4: Simplify right side
    8,753.26x = 28,615,731.18
  5. Step 5: Solve for x
    x = 28,615,731.18/8,753.26
  6. Step 6: Final answer
    x = 3,269.15

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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.