Home / 2,179.12-3,267.46-717.88

Finding the Fourth Proportional to 2,179.12, 3,267.46 and 717.88

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Solution

The fourth proportional to 2,179.12, 3,267.46 and 717.88 is: 1,076.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.12 : 3,267.46 = 717.88 : x
  2. Step 2: Convert to fraction form
    2,179.12/3,267.46 = 717.88/x
  3. Step 3: Cross multiply
    2,179.12x = 3,267.46 × 717.88
  4. Step 4: Simplify right side
    2,179.12x = 2,345,644.18
  5. Step 5: Solve for x
    x = 2,345,644.18/2,179.12
  6. Step 6: Final answer
    x = 1,076.42

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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.