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Finding the Fourth Proportional to 3,081.87, 4,253.13 and 1,755.72

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Solution

The fourth proportional to 3,081.87, 4,253.13 and 1,755.72 is: 2,422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.87 : 4,253.13 = 1,755.72 : x
  2. Step 2: Convert to fraction form
    3,081.87/4,253.13 = 1,755.72/x
  3. Step 3: Cross multiply
    3,081.87x = 4,253.13 × 1,755.72
  4. Step 4: Simplify right side
    3,081.87x = 7,467,305.40
  5. Step 5: Solve for x
    x = 7,467,305.40/3,081.87
  6. Step 6: Final answer
    x = 2,422.98

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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.