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Finding the Fourth Proportional to 2,805.97, 3,869.97 and 2,469.15

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Solution

The fourth proportional to 2,805.97, 3,869.97 and 2,469.15 is: 3,405.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.97 : 3,869.97 = 2,469.15 : x
  2. Step 2: Convert to fraction form
    2,805.97/3,869.97 = 2,469.15/x
  3. Step 3: Cross multiply
    2,805.97x = 3,869.97 × 2,469.15
  4. Step 4: Simplify right side
    2,805.97x = 9,555,536.43
  5. Step 5: Solve for x
    x = 9,555,536.43/2,805.97
  6. Step 6: Final answer
    x = 3,405.43

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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.