Home / 2,748.12-4,122.92-1,286.52

Finding the Fourth Proportional to 2,748.12, 4,122.92 and 1,286.52

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Solution

The fourth proportional to 2,748.12, 4,122.92 and 1,286.52 is: 1,930.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.12 : 4,122.92 = 1,286.52 : x
  2. Step 2: Convert to fraction form
    2,748.12/4,122.92 = 1,286.52/x
  3. Step 3: Cross multiply
    2,748.12x = 4,122.92 × 1,286.52
  4. Step 4: Simplify right side
    2,748.12x = 5,304,219.04
  5. Step 5: Solve for x
    x = 5,304,219.04/2,748.12
  6. Step 6: Final answer
    x = 1,930.13

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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.