Home / 7,149.82-10,721.76-2,764.75

Finding the Fourth Proportional to 7,149.82, 10,721.76 and 2,764.75

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Solution

The fourth proportional to 7,149.82, 10,721.76 and 2,764.75 is: 4,145.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.82 : 10,721.76 = 2,764.75 : x
  2. Step 2: Convert to fraction form
    7,149.82/10,721.76 = 2,764.75/x
  3. Step 3: Cross multiply
    7,149.82x = 10,721.76 × 2,764.75
  4. Step 4: Simplify right side
    7,149.82x = 29,642,985.96
  5. Step 5: Solve for x
    x = 29,642,985.96/7,149.82
  6. Step 6: Final answer
    x = 4,145.98

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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.