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Finding the Fourth Proportional to 4,399.92, 6,600.32 and 1,279.96

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Solution

The fourth proportional to 4,399.92, 6,600.32 and 1,279.96 is: 1,920.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,399.92 : 6,600.32 = 1,279.96 : x
  2. Step 2: Convert to fraction form
    4,399.92/6,600.32 = 1,279.96/x
  3. Step 3: Cross multiply
    4,399.92x = 6,600.32 × 1,279.96
  4. Step 4: Simplify right side
    4,399.92x = 8,448,145.59
  5. Step 5: Solve for x
    x = 8,448,145.59/4,399.92
  6. Step 6: Final answer
    x = 1,920.07

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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.