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Finding the Fourth Proportional to 3,279.92, 4,917.84 and 1,088.08

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Solution

The fourth proportional to 3,279.92, 4,917.84 and 1,088.08 is: 1,631.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.92 : 4,917.84 = 1,088.08 : x
  2. Step 2: Convert to fraction form
    3,279.92/4,917.84 = 1,088.08/x
  3. Step 3: Cross multiply
    3,279.92x = 4,917.84 × 1,088.08
  4. Step 4: Simplify right side
    3,279.92x = 5,351,003.35
  5. Step 5: Solve for x
    x = 5,351,003.35/3,279.92
  6. Step 6: Final answer
    x = 1,631.44

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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.