Home / 7,147.62-10,720.17-2,761.47

Finding the Fourth Proportional to 7,147.62, 10,720.17 and 2,761.47

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Solution

The fourth proportional to 7,147.62, 10,720.17 and 2,761.47 is: 4,141.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.62 : 10,720.17 = 2,761.47 : x
  2. Step 2: Convert to fraction form
    7,147.62/10,720.17 = 2,761.47/x
  3. Step 3: Cross multiply
    7,147.62x = 10,720.17 × 2,761.47
  4. Step 4: Simplify right side
    7,147.62x = 29,603,427.85
  5. Step 5: Solve for x
    x = 29,603,427.85/7,147.62
  6. Step 6: Final answer
    x = 4,141.72

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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.