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Finding the Fourth Proportional to 3,959.08, 5,939.02 and 1,185.44

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Solution

The fourth proportional to 3,959.08, 5,939.02 and 1,185.44 is: 1,778.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.08 : 5,939.02 = 1,185.44 : x
  2. Step 2: Convert to fraction form
    3,959.08/5,939.02 = 1,185.44/x
  3. Step 3: Cross multiply
    3,959.08x = 5,939.02 × 1,185.44
  4. Step 4: Simplify right side
    3,959.08x = 7,040,323.66
  5. Step 5: Solve for x
    x = 7,040,323.66/3,959.08
  6. Step 6: Final answer
    x = 1,778.27

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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.