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Finding the Third Proportional to 3,217 and 7,445

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Solution

The third proportional to 3,217 and 7,445 is: 17,229.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,217 : 7,445 = 7,445 : x
  2. Step 2: Convert to fraction form
    3,217/7,445 = 7,445/x
  3. Step 3: Cross multiply
    3,217x = 7,445 × 7,445
  4. Step 4: Simplify right side
    3,217x = 55,428,025
  5. Step 5: Solve for x
    x = 55,428,025/3,217
  6. Step 6: Final answer
    x = 17,229.72

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.