Home / 3,879.10-5,353.28-2,200.58

Finding the Fourth Proportional to 3,879.10, 5,353.28 and 2,200.58

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Solution

The fourth proportional to 3,879.10, 5,353.28 and 2,200.58 is: 3,036.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.10 : 5,353.28 = 2,200.58 : x
  2. Step 2: Convert to fraction form
    3,879.10/5,353.28 = 2,200.58/x
  3. Step 3: Cross multiply
    3,879.10x = 5,353.28 × 2,200.58
  4. Step 4: Simplify right side
    3,879.10x = 11,780,320.90
  5. Step 5: Solve for x
    x = 11,780,320.90/3,879.10
  6. Step 6: Final answer
    x = 3,036.87

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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.