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Finding the Fourth Proportional to 8,879.16, 12,305.04 and 8,753.88

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Solution

The fourth proportional to 8,879.16, 12,305.04 and 8,753.88 is: 12,131.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.16 : 12,305.04 = 8,753.88 : x
  2. Step 2: Convert to fraction form
    8,879.16/12,305.04 = 8,753.88/x
  3. Step 3: Cross multiply
    8,879.16x = 12,305.04 × 8,753.88
  4. Step 4: Simplify right side
    8,879.16x = 107,716,843.56
  5. Step 5: Solve for x
    x = 107,716,843.56/8,879.16
  6. Step 6: Final answer
    x = 12,131.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.