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Finding the Third Proportional to 7,712 and 12,262

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Solution

The third proportional to 7,712 and 12,262 is: 19,496.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712 : 12,262 = 12,262 : x
  2. Step 2: Convert to fraction form
    7,712/12,262 = 12,262/x
  3. Step 3: Cross multiply
    7,712x = 12,262 × 12,262
  4. Step 4: Simplify right side
    7,712x = 150,356,644
  5. Step 5: Solve for x
    x = 150,356,644/7,712
  6. Step 6: Final answer
    x = 19,496.45

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.