Home / 3,959.28-5,463.92-2,190.92

Finding the Fourth Proportional to 3,959.28, 5,463.92 and 2,190.92

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Solution

The fourth proportional to 3,959.28, 5,463.92 and 2,190.92 is: 3,023.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.28 : 5,463.92 = 2,190.92 : x
  2. Step 2: Convert to fraction form
    3,959.28/5,463.92 = 2,190.92/x
  3. Step 3: Cross multiply
    3,959.28x = 5,463.92 × 2,190.92
  4. Step 4: Simplify right side
    3,959.28x = 11,970,989.76
  5. Step 5: Solve for x
    x = 11,970,989.76/3,959.28
  6. Step 6: Final answer
    x = 3,023.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.