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Finding the Fourth Proportional to 6,936.60, 10,404.90 and 3,480.60

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Solution

The fourth proportional to 6,936.60, 10,404.90 and 3,480.60 is: 5,220.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,936.60 : 10,404.90 = 3,480.60 : x
  2. Step 2: Convert to fraction form
    6,936.60/10,404.90 = 3,480.60/x
  3. Step 3: Cross multiply
    6,936.60x = 10,404.90 × 3,480.60
  4. Step 4: Simplify right side
    6,936.60x = 36,215,294.94
  5. Step 5: Solve for x
    x = 36,215,294.94/6,936.60
  6. Step 6: Final answer
    x = 5,220.90

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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.