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Finding the Fourth Proportional to 8,166.84, 12,238.44 and 5,631.35

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Solution

The fourth proportional to 8,166.84, 12,238.44 and 5,631.35 is: 8,438.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,166.84 : 12,238.44 = 5,631.35 : x
  2. Step 2: Convert to fraction form
    8,166.84/12,238.44 = 5,631.35/x
  3. Step 3: Cross multiply
    8,166.84x = 12,238.44 × 5,631.35
  4. Step 4: Simplify right side
    8,166.84x = 68,918,877.90
  5. Step 5: Solve for x
    x = 68,918,877.90/8,166.84
  6. Step 6: Final answer
    x = 8,438.87

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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.