Home / 2,787.14-4,178.66-1,691.30

Finding the Fourth Proportional to 2,787.14, 4,178.66 and 1,691.30

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Solution

The fourth proportional to 2,787.14, 4,178.66 and 1,691.30 is: 2,535.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.14 : 4,178.66 = 1,691.30 : x
  2. Step 2: Convert to fraction form
    2,787.14/4,178.66 = 1,691.30/x
  3. Step 3: Cross multiply
    2,787.14x = 4,178.66 × 1,691.30
  4. Step 4: Simplify right side
    2,787.14x = 7,067,367.66
  5. Step 5: Solve for x
    x = 7,067,367.66/2,787.14
  6. Step 6: Final answer
    x = 2,535.71

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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.