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Finding the Fourth Proportional to 6,640.97, 9,961.47 and 2,258.78

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Solution

The fourth proportional to 6,640.97, 9,961.47 and 2,258.78 is: 3,388.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.97 : 9,961.47 = 2,258.78 : x
  2. Step 2: Convert to fraction form
    6,640.97/9,961.47 = 2,258.78/x
  3. Step 3: Cross multiply
    6,640.97x = 9,961.47 × 2,258.78
  4. Step 4: Simplify right side
    6,640.97x = 22,500,794.11
  5. Step 5: Solve for x
    x = 22,500,794.11/6,640.97
  6. Step 6: Final answer
    x = 3,388.18

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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.