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Finding the Fourth Proportional to 8,986.20, 13,479.30 and 6,799.20

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Solution

The fourth proportional to 8,986.20, 13,479.30 and 6,799.20 is: 10,198.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.20 : 13,479.30 = 6,799.20 : x
  2. Step 2: Convert to fraction form
    8,986.20/13,479.30 = 6,799.20/x
  3. Step 3: Cross multiply
    8,986.20x = 13,479.30 × 6,799.20
  4. Step 4: Simplify right side
    8,986.20x = 91,648,456.56
  5. Step 5: Solve for x
    x = 91,648,456.56/8,986.20
  6. Step 6: Final answer
    x = 10,198.80

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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.