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Finding the Fourth Proportional to 3,946.08, 5,919.09 and 1,479.15

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Solution

The fourth proportional to 3,946.08, 5,919.09 and 1,479.15 is: 2,218.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.08 : 5,919.09 = 1,479.15 : x
  2. Step 2: Convert to fraction form
    3,946.08/5,919.09 = 1,479.15/x
  3. Step 3: Cross multiply
    3,946.08x = 5,919.09 × 1,479.15
  4. Step 4: Simplify right side
    3,946.08x = 8,755,221.97
  5. Step 5: Solve for x
    x = 8,755,221.97/3,946.08
  6. Step 6: Final answer
    x = 2,218.71

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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.