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Finding the Fourth Proportional to 3,391.76, 4,680.92 and 1,899.97

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Solution

The fourth proportional to 3,391.76, 4,680.92 and 1,899.97 is: 2,622.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.76 : 4,680.92 = 1,899.97 : x
  2. Step 2: Convert to fraction form
    3,391.76/4,680.92 = 1,899.97/x
  3. Step 3: Cross multiply
    3,391.76x = 4,680.92 × 1,899.97
  4. Step 4: Simplify right side
    3,391.76x = 8,893,600.62
  5. Step 5: Solve for x
    x = 8,893,600.62/3,391.76
  6. Step 6: Final answer
    x = 2,622.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.