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Finding the Fourth Proportional to 2,485.83, 3,729.11 and 754.95

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Solution

The fourth proportional to 2,485.83, 3,729.11 and 754.95 is: 1,132.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.83 : 3,729.11 = 754.95 : x
  2. Step 2: Convert to fraction form
    2,485.83/3,729.11 = 754.95/x
  3. Step 3: Cross multiply
    2,485.83x = 3,729.11 × 754.95
  4. Step 4: Simplify right side
    2,485.83x = 2,815,287.82
  5. Step 5: Solve for x
    x = 2,815,287.82/2,485.83
  6. Step 6: Final answer
    x = 1,132.53

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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.