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Finding the Fourth Proportional to 8,200.80, 12,286.80 and 7,048.80

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Solution

The fourth proportional to 8,200.80, 12,286.80 and 7,048.80 is: 10,560.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,200.80 : 12,286.80 = 7,048.80 : x
  2. Step 2: Convert to fraction form
    8,200.80/12,286.80 = 7,048.80/x
  3. Step 3: Cross multiply
    8,200.80x = 12,286.80 × 7,048.80
  4. Step 4: Simplify right side
    8,200.80x = 86,607,195.84
  5. Step 5: Solve for x
    x = 86,607,195.84/8,200.80
  6. Step 6: Final answer
    x = 10,560.82

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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.