Home / 7,419.72-11,131.56-2,489.88

Finding the Fourth Proportional to 7,419.72, 11,131.56 and 2,489.88

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Solution

The fourth proportional to 7,419.72, 11,131.56 and 2,489.88 is: 3,735.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.72 : 11,131.56 = 2,489.88 : x
  2. Step 2: Convert to fraction form
    7,419.72/11,131.56 = 2,489.88/x
  3. Step 3: Cross multiply
    7,419.72x = 11,131.56 × 2,489.88
  4. Step 4: Simplify right side
    7,419.72x = 27,716,248.61
  5. Step 5: Solve for x
    x = 27,716,248.61/7,419.72
  6. Step 6: Final answer
    x = 3,735.48

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.