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Finding the Third Proportional to 5,558 and 8,222

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Solution

The third proportional to 5,558 and 8,222 is: 12,162.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,558 : 8,222 = 8,222 : x
  2. Step 2: Convert to fraction form
    5,558/8,222 = 8,222/x
  3. Step 3: Cross multiply
    5,558x = 8,222 × 8,222
  4. Step 4: Simplify right side
    5,558x = 67,601,284
  5. Step 5: Solve for x
    x = 67,601,284/5,558
  6. Step 6: Final answer
    x = 12,162.88

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.