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Finding the Third Proportional to 7,772 and 17,188

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Solution

The third proportional to 7,772 and 17,188 is: 38,011.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772 : 17,188 = 17,188 : x
  2. Step 2: Convert to fraction form
    7,772/17,188 = 17,188/x
  3. Step 3: Cross multiply
    7,772x = 17,188 × 17,188
  4. Step 4: Simplify right side
    7,772x = 295,427,344
  5. Step 5: Solve for x
    x = 295,427,344/7,772
  6. Step 6: Final answer
    x = 38,011.75

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.