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Finding the Fourth Proportional to 3,761.81, 5,641.47 and 1,296.57

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Solution

The fourth proportional to 3,761.81, 5,641.47 and 1,296.57 is: 1,944.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.81 : 5,641.47 = 1,296.57 : x
  2. Step 2: Convert to fraction form
    3,761.81/5,641.47 = 1,296.57/x
  3. Step 3: Cross multiply
    3,761.81x = 5,641.47 × 1,296.57
  4. Step 4: Simplify right side
    3,761.81x = 7,314,560.76
  5. Step 5: Solve for x
    x = 7,314,560.76/3,761.81
  6. Step 6: Final answer
    x = 1,944.43

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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.