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Finding the Fourth Proportional to 3,959.78, 5,939.53 and 1,881.27

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Solution

The fourth proportional to 3,959.78, 5,939.53 and 1,881.27 is: 2,821.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.78 : 5,939.53 = 1,881.27 : x
  2. Step 2: Convert to fraction form
    3,959.78/5,939.53 = 1,881.27/x
  3. Step 3: Cross multiply
    3,959.78x = 5,939.53 × 1,881.27
  4. Step 4: Simplify right side
    3,959.78x = 11,173,859.60
  5. Step 5: Solve for x
    x = 11,173,859.60/3,959.78
  6. Step 6: Final answer
    x = 2,821.84

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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.