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Finding the Fourth Proportional to 2,486.09, 3,729.11 and 754.71

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Solution

The fourth proportional to 2,486.09, 3,729.11 and 754.71 is: 1,132.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.09 : 3,729.11 = 754.71 : x
  2. Step 2: Convert to fraction form
    2,486.09/3,729.11 = 754.71/x
  3. Step 3: Cross multiply
    2,486.09x = 3,729.11 × 754.71
  4. Step 4: Simplify right side
    2,486.09x = 2,814,392.83
  5. Step 5: Solve for x
    x = 2,814,392.83/2,486.09
  6. Step 6: Final answer
    x = 1,132.06

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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.