Home / 3,180.97-4,388.28-1,921.52

Finding the Fourth Proportional to 3,180.97, 4,388.28 and 1,921.52

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Solution

The fourth proportional to 3,180.97, 4,388.28 and 1,921.52 is: 2,650.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.97 : 4,388.28 = 1,921.52 : x
  2. Step 2: Convert to fraction form
    3,180.97/4,388.28 = 1,921.52/x
  3. Step 3: Cross multiply
    3,180.97x = 4,388.28 × 1,921.52
  4. Step 4: Simplify right side
    3,180.97x = 8,432,171.55
  5. Step 5: Solve for x
    x = 8,432,171.55/3,180.97
  6. Step 6: Final answer
    x = 2,650.82

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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.