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Finding the Fourth Proportional to 2,876.90, 3,952.92 and 2,286.41

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Solution

The fourth proportional to 2,876.90, 3,952.92 and 2,286.41 is: 3,141.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.90 : 3,952.92 = 2,286.41 : x
  2. Step 2: Convert to fraction form
    2,876.90/3,952.92 = 2,286.41/x
  3. Step 3: Cross multiply
    2,876.90x = 3,952.92 × 2,286.41
  4. Step 4: Simplify right side
    2,876.90x = 9,038,022.73
  5. Step 5: Solve for x
    x = 9,038,022.73/2,876.90
  6. Step 6: Final answer
    x = 3,141.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.