Home / 2,679.38-4,017.38-1,293.06

Finding the Fourth Proportional to 2,679.38, 4,017.38 and 1,293.06

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Solution

The fourth proportional to 2,679.38, 4,017.38 and 1,293.06 is: 1,938.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.38 : 4,017.38 = 1,293.06 : x
  2. Step 2: Convert to fraction form
    2,679.38/4,017.38 = 1,293.06/x
  3. Step 3: Cross multiply
    2,679.38x = 4,017.38 × 1,293.06
  4. Step 4: Simplify right side
    2,679.38x = 5,194,706.92
  5. Step 5: Solve for x
    x = 5,194,706.92/2,679.38
  6. Step 6: Final answer
    x = 1,938.78

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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.