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Finding the Fourth Proportional to 3,174.55, 4,761.77 and 866.05

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Solution

The fourth proportional to 3,174.55, 4,761.77 and 866.05 is: 1,299.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,174.55 : 4,761.77 = 866.05 : x
  2. Step 2: Convert to fraction form
    3,174.55/4,761.77 = 866.05/x
  3. Step 3: Cross multiply
    3,174.55x = 4,761.77 × 866.05
  4. Step 4: Simplify right side
    3,174.55x = 4,123,927.12
  5. Step 5: Solve for x
    x = 4,123,927.12/3,174.55
  6. Step 6: Final answer
    x = 1,299.06

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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.