Home / 3,947.88-5,921.69-1,174.56

Finding the Fourth Proportional to 3,947.88, 5,921.69 and 1,174.56

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Solution

The fourth proportional to 3,947.88, 5,921.69 and 1,174.56 is: 1,761.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.88 : 5,921.69 = 1,174.56 : x
  2. Step 2: Convert to fraction form
    3,947.88/5,921.69 = 1,174.56/x
  3. Step 3: Cross multiply
    3,947.88x = 5,921.69 × 1,174.56
  4. Step 4: Simplify right side
    3,947.88x = 6,955,350.60
  5. Step 5: Solve for x
    x = 6,955,350.60/3,947.88
  6. Step 6: Final answer
    x = 1,761.80

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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.