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Finding the Fourth Proportional to 3,860.73, 5,791.10 and 2,140.29

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Solution

The fourth proportional to 3,860.73, 5,791.10 and 2,140.29 is: 3,210.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.73 : 5,791.10 = 2,140.29 : x
  2. Step 2: Convert to fraction form
    3,860.73/5,791.10 = 2,140.29/x
  3. Step 3: Cross multiply
    3,860.73x = 5,791.10 × 2,140.29
  4. Step 4: Simplify right side
    3,860.73x = 12,394,622.72
  5. Step 5: Solve for x
    x = 12,394,622.72/3,860.73
  6. Step 6: Final answer
    x = 3,210.44

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Similar ratio
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1.5x scale

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.