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Finding the Fourth Proportional to 3,290.92, 4,939.11 and 2,604.75

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Solution

The fourth proportional to 3,290.92, 4,939.11 and 2,604.75 is: 3,909.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.92 : 4,939.11 = 2,604.75 : x
  2. Step 2: Convert to fraction form
    3,290.92/4,939.11 = 2,604.75/x
  3. Step 3: Cross multiply
    3,290.92x = 4,939.11 × 2,604.75
  4. Step 4: Simplify right side
    3,290.92x = 12,865,146.77
  5. Step 5: Solve for x
    x = 12,865,146.77/3,290.92
  6. Step 6: Final answer
    x = 3,909.29

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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.