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Finding the Fourth Proportional to 2,027.43, 3,040.71 and 640.89

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Solution

The fourth proportional to 2,027.43, 3,040.71 and 640.89 is: 961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,027.43 : 3,040.71 = 640.89 : x
  2. Step 2: Convert to fraction form
    2,027.43/3,040.71 = 640.89/x
  3. Step 3: Cross multiply
    2,027.43x = 3,040.71 × 640.89
  4. Step 4: Simplify right side
    2,027.43x = 1,948,755.08
  5. Step 5: Solve for x
    x = 1,948,755.08/2,027.43
  6. Step 6: Final answer
    x = 961.19

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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.