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Finding the Fourth Proportional to 2,634.84, 3,951.81 and 881.06

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Solution

The fourth proportional to 2,634.84, 3,951.81 and 881.06 is: 1,321.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,634.84 : 3,951.81 = 881.06 : x
  2. Step 2: Convert to fraction form
    2,634.84/3,951.81 = 881.06/x
  3. Step 3: Cross multiply
    2,634.84x = 3,951.81 × 881.06
  4. Step 4: Simplify right side
    2,634.84x = 3,481,761.96
  5. Step 5: Solve for x
    x = 3,481,761.96/2,634.84
  6. Step 6: Final answer
    x = 1,321.43

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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.