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Finding the Fourth Proportional to 8,949.72, 12,357.18 and 8,286.24

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Solution

The fourth proportional to 8,949.72, 12,357.18 and 8,286.24 is: 11,441.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,949.72 : 12,357.18 = 8,286.24 : x
  2. Step 2: Convert to fraction form
    8,949.72/12,357.18 = 8,286.24/x
  3. Step 3: Cross multiply
    8,949.72x = 12,357.18 × 8,286.24
  4. Step 4: Simplify right side
    8,949.72x = 102,394,559.20
  5. Step 5: Solve for x
    x = 102,394,559.20/8,949.72
  6. Step 6: Final answer
    x = 11,441.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.