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Finding the Fourth Proportional to 5,761.56, 8,642.03 and 1,865.66

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Solution

The fourth proportional to 5,761.56, 8,642.03 and 1,865.66 is: 2,798.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,761.56 : 8,642.03 = 1,865.66 : x
  2. Step 2: Convert to fraction form
    5,761.56/8,642.03 = 1,865.66/x
  3. Step 3: Cross multiply
    5,761.56x = 8,642.03 × 1,865.66
  4. Step 4: Simplify right side
    5,761.56x = 16,123,037.15
  5. Step 5: Solve for x
    x = 16,123,037.15/5,761.56
  6. Step 6: Final answer
    x = 2,798.38

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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.