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Finding the Third Proportional to 7,216 and 18,712

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Solution

The third proportional to 7,216 and 18,712 is: 48,522.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216 : 18,712 = 18,712 : x
  2. Step 2: Convert to fraction form
    7,216/18,712 = 18,712/x
  3. Step 3: Cross multiply
    7,216x = 18,712 × 18,712
  4. Step 4: Simplify right side
    7,216x = 350,138,944
  5. Step 5: Solve for x
    x = 350,138,944/7,216
  6. Step 6: Final answer
    x = 48,522.58

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Why These Related Problems?

These problems maintain the same ratio (2.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.