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Finding the Third Proportional to 7,860 and 12,202

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Solution

The third proportional to 7,860 and 12,202 is: 18,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860 : 12,202 = 12,202 : x
  2. Step 2: Convert to fraction form
    7,860/12,202 = 12,202/x
  3. Step 3: Cross multiply
    7,860x = 12,202 × 12,202
  4. Step 4: Simplify right side
    7,860x = 148,888,804
  5. Step 5: Solve for x
    x = 148,888,804/7,860
  6. Step 6: Final answer
    x = 18,942.60

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.