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Finding the Fourth Proportional to 3,898, 5,375.58 and 2,905.48

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Solution

The fourth proportional to 3,898, 5,375.58 and 2,905.48 is: 4,006.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898 : 5,375.58 = 2,905.48 : x
  2. Step 2: Convert to fraction form
    3,898/5,375.58 = 2,905.48/x
  3. Step 3: Cross multiply
    3,898x = 5,375.58 × 2,905.48
  4. Step 4: Simplify right side
    3,898x = 15,618,640.18
  5. Step 5: Solve for x
    x = 15,618,640.18/3,898
  6. Step 6: Final answer
    x = 4,006.83

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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.