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Finding the Fourth Proportional to 8,218.32, 12,327.48 and 6,982.80

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Solution

The fourth proportional to 8,218.32, 12,327.48 and 6,982.80 is: 10,474.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,218.32 : 12,327.48 = 6,982.80 : x
  2. Step 2: Convert to fraction form
    8,218.32/12,327.48 = 6,982.80/x
  3. Step 3: Cross multiply
    8,218.32x = 12,327.48 × 6,982.80
  4. Step 4: Simplify right side
    8,218.32x = 86,080,327.34
  5. Step 5: Solve for x
    x = 86,080,327.34/8,218.32
  6. Step 6: Final answer
    x = 10,474.20

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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.