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Finding the Fourth Proportional to 3,081.88, 4,252.26 and 1,755.64

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Solution

The fourth proportional to 3,081.88, 4,252.26 and 1,755.64 is: 2,422.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.88 : 4,252.26 = 1,755.64 : x
  2. Step 2: Convert to fraction form
    3,081.88/4,252.26 = 1,755.64/x
  3. Step 3: Cross multiply
    3,081.88x = 4,252.26 × 1,755.64
  4. Step 4: Simplify right side
    3,081.88x = 7,465,437.75
  5. Step 5: Solve for x
    x = 7,465,437.75/3,081.88
  6. Step 6: Final answer
    x = 2,422.36

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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.