Home / 2,182.30-3,273.60-721.47

Finding the Fourth Proportional to 2,182.30, 3,273.60 and 721.47

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Solution

The fourth proportional to 2,182.30, 3,273.60 and 721.47 is: 1,082.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,182.30 : 3,273.60 = 721.47 : x
  2. Step 2: Convert to fraction form
    2,182.30/3,273.60 = 721.47/x
  3. Step 3: Cross multiply
    2,182.30x = 3,273.60 × 721.47
  4. Step 4: Simplify right side
    2,182.30x = 2,361,796.01
  5. Step 5: Solve for x
    x = 2,361,796.01/2,182.30
  6. Step 6: Final answer
    x = 1,082.25

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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.