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Finding the Fourth Proportional to 2,691.63, 4,028.88 and 2,589.57

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Solution

The fourth proportional to 2,691.63, 4,028.88 and 2,589.57 is: 3,876.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.63 : 4,028.88 = 2,589.57 : x
  2. Step 2: Convert to fraction form
    2,691.63/4,028.88 = 2,589.57/x
  3. Step 3: Cross multiply
    2,691.63x = 4,028.88 × 2,589.57
  4. Step 4: Simplify right side
    2,691.63x = 10,433,066.78
  5. Step 5: Solve for x
    x = 10,433,066.78/2,691.63
  6. Step 6: Final answer
    x = 3,876.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.