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Finding the Fourth Proportional to 6,640.74, 9,961.08 and 2,745.42

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Solution

The fourth proportional to 6,640.74, 9,961.08 and 2,745.42 is: 4,118.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.74 : 9,961.08 = 2,745.42 : x
  2. Step 2: Convert to fraction form
    6,640.74/9,961.08 = 2,745.42/x
  3. Step 3: Cross multiply
    6,640.74x = 9,961.08 × 2,745.42
  4. Step 4: Simplify right side
    6,640.74x = 27,347,348.25
  5. Step 5: Solve for x
    x = 27,347,348.25/6,640.74
  6. Step 6: Final answer
    x = 4,118.12

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Similar ratio
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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.