Home / 3,947.40-5,921.50-1,350.54

Finding the Fourth Proportional to 3,947.40, 5,921.50 and 1,350.54

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Solution

The fourth proportional to 3,947.40, 5,921.50 and 1,350.54 is: 2,025.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.40 : 5,921.50 = 1,350.54 : x
  2. Step 2: Convert to fraction form
    3,947.40/5,921.50 = 1,350.54/x
  3. Step 3: Cross multiply
    3,947.40x = 5,921.50 × 1,350.54
  4. Step 4: Simplify right side
    3,947.40x = 7,997,222.61
  5. Step 5: Solve for x
    x = 7,997,222.61/3,947.40
  6. Step 6: Final answer
    x = 2,025.95

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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.