Home / 2,787.10-4,180.77-1,142.49

Finding the Fourth Proportional to 2,787.10, 4,180.77 and 1,142.49

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Solution

The fourth proportional to 2,787.10, 4,180.77 and 1,142.49 is: 1,713.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.10 : 4,180.77 = 1,142.49 : x
  2. Step 2: Convert to fraction form
    2,787.10/4,180.77 = 1,142.49/x
  3. Step 3: Cross multiply
    2,787.10x = 4,180.77 × 1,142.49
  4. Step 4: Simplify right side
    2,787.10x = 4,776,487.92
  5. Step 5: Solve for x
    x = 4,776,487.92/2,787.10
  6. Step 6: Final answer
    x = 1,713.78

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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.