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Finding the Fourth Proportional to 7,936.90, 11,902.04 and 3,255.90

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Solution

The fourth proportional to 7,936.90, 11,902.04 and 3,255.90 is: 4,882.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,936.90 : 11,902.04 = 3,255.90 : x
  2. Step 2: Convert to fraction form
    7,936.90/11,902.04 = 3,255.90/x
  3. Step 3: Cross multiply
    7,936.90x = 11,902.04 × 3,255.90
  4. Step 4: Simplify right side
    7,936.90x = 38,751,852.04
  5. Step 5: Solve for x
    x = 38,751,852.04/7,936.90
  6. Step 6: Final answer
    x = 4,882.49

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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.