Home / 7,147.28-10,721.46-2,764.38

Finding the Fourth Proportional to 7,147.28, 10,721.46 and 2,764.38

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Solution

The fourth proportional to 7,147.28, 10,721.46 and 2,764.38 is: 4,146.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.28 : 10,721.46 = 2,764.38 : x
  2. Step 2: Convert to fraction form
    7,147.28/10,721.46 = 2,764.38/x
  3. Step 3: Cross multiply
    7,147.28x = 10,721.46 × 2,764.38
  4. Step 4: Simplify right side
    7,147.28x = 29,638,189.59
  5. Step 5: Solve for x
    x = 29,638,189.59/7,147.28
  6. Step 6: Final answer
    x = 4,146.78

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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.