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Finding the Fourth Proportional to 2,591.78, 3,578.84 and 1,755.26

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Solution

The fourth proportional to 2,591.78, 3,578.84 and 1,755.26 is: 2,423.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.78 : 3,578.84 = 1,755.26 : x
  2. Step 2: Convert to fraction form
    2,591.78/3,578.84 = 1,755.26/x
  3. Step 3: Cross multiply
    2,591.78x = 3,578.84 × 1,755.26
  4. Step 4: Simplify right side
    2,591.78x = 6,281,768.03
  5. Step 5: Solve for x
    x = 6,281,768.03/2,591.78
  6. Step 6: Final answer
    x = 2,423.73

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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.