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Finding the Fourth Proportional to 8,286.81, 12,418.84 and 4,383.42

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Solution

The fourth proportional to 8,286.81, 12,418.84 and 4,383.42 is: 6,569.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.81 : 12,418.84 = 4,383.42 : x
  2. Step 2: Convert to fraction form
    8,286.81/12,418.84 = 4,383.42/x
  3. Step 3: Cross multiply
    8,286.81x = 12,418.84 × 4,383.42
  4. Step 4: Simplify right side
    8,286.81x = 54,436,991.63
  5. Step 5: Solve for x
    x = 54,436,991.63/8,286.81
  6. Step 6: Final answer
    x = 6,569.11

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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.