Home / 7,679.12-11,517.24-2,748.56

Finding the Fourth Proportional to 7,679.12, 11,517.24 and 2,748.56

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Solution

The fourth proportional to 7,679.12, 11,517.24 and 2,748.56 is: 4,122.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.12 : 11,517.24 = 2,748.56 : x
  2. Step 2: Convert to fraction form
    7,679.12/11,517.24 = 2,748.56/x
  3. Step 3: Cross multiply
    7,679.12x = 11,517.24 × 2,748.56
  4. Step 4: Simplify right side
    7,679.12x = 31,655,825.17
  5. Step 5: Solve for x
    x = 31,655,825.17/7,679.12
  6. Step 6: Final answer
    x = 4,122.32

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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.