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Finding the Fourth Proportional to 8,122.10, 12,186.92 and 4,419.92

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Solution

The fourth proportional to 8,122.10, 12,186.92 and 4,419.92 is: 6,631.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.10 : 12,186.92 = 4,419.92 : x
  2. Step 2: Convert to fraction form
    8,122.10/12,186.92 = 4,419.92/x
  3. Step 3: Cross multiply
    8,122.10x = 12,186.92 × 4,419.92
  4. Step 4: Simplify right side
    8,122.10x = 53,865,252.96
  5. Step 5: Solve for x
    x = 53,865,252.96/8,122.10
  6. Step 6: Final answer
    x = 6,631.94

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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.