Home / 2,839.30-4,256.11-1,380.49

Finding the Fourth Proportional to 2,839.30, 4,256.11 and 1,380.49

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Solution

The fourth proportional to 2,839.30, 4,256.11 and 1,380.49 is: 2,069.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.30 : 4,256.11 = 1,380.49 : x
  2. Step 2: Convert to fraction form
    2,839.30/4,256.11 = 1,380.49/x
  3. Step 3: Cross multiply
    2,839.30x = 4,256.11 × 1,380.49
  4. Step 4: Simplify right side
    2,839.30x = 5,875,517.29
  5. Step 5: Solve for x
    x = 5,875,517.29/2,839.30
  6. Step 6: Final answer
    x = 2,069.35

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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.