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Finding the Fourth Proportional to 8,150.80, 12,213.40 and 6,845.20

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Solution

The fourth proportional to 8,150.80, 12,213.40 and 6,845.20 is: 10,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,150.80 : 12,213.40 = 6,845.20 : x
  2. Step 2: Convert to fraction form
    8,150.80/12,213.40 = 6,845.20/x
  3. Step 3: Cross multiply
    8,150.80x = 12,213.40 × 6,845.20
  4. Step 4: Simplify right side
    8,150.80x = 83,603,165.68
  5. Step 5: Solve for x
    x = 83,603,165.68/8,150.80
  6. Step 6: Final answer
    x = 10,257.05

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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.