Home / 3,947.68-5,920.88-1,350.56

Finding the Fourth Proportional to 3,947.68, 5,920.88 and 1,350.56

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Solution

The fourth proportional to 3,947.68, 5,920.88 and 1,350.56 is: 2,025.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.68 : 5,920.88 = 1,350.56 : x
  2. Step 2: Convert to fraction form
    3,947.68/5,920.88 = 1,350.56/x
  3. Step 3: Cross multiply
    3,947.68x = 5,920.88 × 1,350.56
  4. Step 4: Simplify right side
    3,947.68x = 7,996,503.69
  5. Step 5: Solve for x
    x = 7,996,503.69/3,947.68
  6. Step 6: Final answer
    x = 2,025.62

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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.