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Finding the Fourth Proportional to 3,081.70, 4,252.75 and 1,755.39

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Solution

The fourth proportional to 3,081.70, 4,252.75 and 1,755.39 is: 2,422.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.70 : 4,252.75 = 1,755.39 : x
  2. Step 2: Convert to fraction form
    3,081.70/4,252.75 = 1,755.39/x
  3. Step 3: Cross multiply
    3,081.70x = 4,252.75 × 1,755.39
  4. Step 4: Simplify right side
    3,081.70x = 7,465,246.38
  5. Step 5: Solve for x
    x = 7,465,246.38/3,081.70
  6. Step 6: Final answer
    x = 2,422.44

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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.