Home / 2,787.30-4,180.68-1,691.37

Finding the Fourth Proportional to 2,787.30, 4,180.68 and 1,691.37

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Solution

The fourth proportional to 2,787.30, 4,180.68 and 1,691.37 is: 2,536.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.30 : 4,180.68 = 1,691.37 : x
  2. Step 2: Convert to fraction form
    2,787.30/4,180.68 = 1,691.37/x
  3. Step 3: Cross multiply
    2,787.30x = 4,180.68 × 1,691.37
  4. Step 4: Simplify right side
    2,787.30x = 7,071,076.73
  5. Step 5: Solve for x
    x = 7,071,076.73/2,787.30
  6. Step 6: Final answer
    x = 2,536.89

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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.