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Finding the Fourth Proportional to 7,489.02, 11,218.49 and 3,729.48

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Solution

The fourth proportional to 7,489.02, 11,218.49 and 3,729.48 is: 5,586.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,489.02 : 11,218.49 = 3,729.48 : x
  2. Step 2: Convert to fraction form
    7,489.02/11,218.49 = 3,729.48/x
  3. Step 3: Cross multiply
    7,489.02x = 11,218.49 × 3,729.48
  4. Step 4: Simplify right side
    7,489.02x = 41,839,134.09
  5. Step 5: Solve for x
    x = 41,839,134.09/7,489.02
  6. Step 6: Final answer
    x = 5,586.73

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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.