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Finding the Fourth Proportional to 2,757.47, 3,805.28 and 1,680.43

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Solution

The fourth proportional to 2,757.47, 3,805.28 and 1,680.43 is: 2,318.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.47 : 3,805.28 = 1,680.43 : x
  2. Step 2: Convert to fraction form
    2,757.47/3,805.28 = 1,680.43/x
  3. Step 3: Cross multiply
    2,757.47x = 3,805.28 × 1,680.43
  4. Step 4: Simplify right side
    2,757.47x = 6,394,491.49
  5. Step 5: Solve for x
    x = 6,394,491.49/2,757.47
  6. Step 6: Final answer
    x = 2,318.97

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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.