Home / 2,787.43-4,179.16-1,399.76

Finding the Fourth Proportional to 2,787.43, 4,179.16 and 1,399.76

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Solution

The fourth proportional to 2,787.43, 4,179.16 and 1,399.76 is: 2,098.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.43 : 4,179.16 = 1,399.76 : x
  2. Step 2: Convert to fraction form
    2,787.43/4,179.16 = 1,399.76/x
  3. Step 3: Cross multiply
    2,787.43x = 4,179.16 × 1,399.76
  4. Step 4: Simplify right side
    2,787.43x = 5,849,821.00
  5. Step 5: Solve for x
    x = 5,849,821.00/2,787.43
  6. Step 6: Final answer
    x = 2,098.64

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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.