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Finding the Fourth Proportional to 2,872.97, 3,963.30 and 1,878.29

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Solution

The fourth proportional to 2,872.97, 3,963.30 and 1,878.29 is: 2,591.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.97 : 3,963.30 = 1,878.29 : x
  2. Step 2: Convert to fraction form
    2,872.97/3,963.30 = 1,878.29/x
  3. Step 3: Cross multiply
    2,872.97x = 3,963.30 × 1,878.29
  4. Step 4: Simplify right side
    2,872.97x = 7,444,226.76
  5. Step 5: Solve for x
    x = 7,444,226.76/2,872.97
  6. Step 6: Final answer
    x = 2,591.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.