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Finding the Fourth Proportional to 3,540.97, 5,310.78 and 1,348.98

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Solution

The fourth proportional to 3,540.97, 5,310.78 and 1,348.98 is: 2,023.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.97 : 5,310.78 = 1,348.98 : x
  2. Step 2: Convert to fraction form
    3,540.97/5,310.78 = 1,348.98/x
  3. Step 3: Cross multiply
    3,540.97x = 5,310.78 × 1,348.98
  4. Step 4: Simplify right side
    3,540.97x = 7,164,136.00
  5. Step 5: Solve for x
    x = 7,164,136.00/3,540.97
  6. Step 6: Final answer
    x = 2,023.21

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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.