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Finding the Fourth Proportional to 6,640.12, 9,961.98 and 2,744.92

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Solution

The fourth proportional to 6,640.12, 9,961.98 and 2,744.92 is: 4,118.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.12 : 9,961.98 = 2,744.92 : x
  2. Step 2: Convert to fraction form
    6,640.12/9,961.98 = 2,744.92/x
  3. Step 3: Cross multiply
    6,640.12x = 9,961.98 × 2,744.92
  4. Step 4: Simplify right side
    6,640.12x = 27,344,838.14
  5. Step 5: Solve for x
    x = 27,344,838.14/6,640.12
  6. Step 6: Final answer
    x = 4,118.12

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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.