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Finding the Fourth Proportional to 2,757.38, 3,805.18 and 1,515.38

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Solution

The fourth proportional to 2,757.38, 3,805.18 and 1,515.38 is: 2,091.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.38 : 3,805.18 = 1,515.38 : x
  2. Step 2: Convert to fraction form
    2,757.38/3,805.18 = 1,515.38/x
  3. Step 3: Cross multiply
    2,757.38x = 3,805.18 × 1,515.38
  4. Step 4: Simplify right side
    2,757.38x = 5,766,270.85
  5. Step 5: Solve for x
    x = 5,766,270.85/2,757.38
  6. Step 6: Final answer
    x = 2,091.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.