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Finding the Third Proportional to 971.50 and 2,230

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Solution

The third proportional to 971.50 and 2,230 is: 5,118.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    971.50 : 2,230 = 2,230 : x
  2. Step 2: Convert to fraction form
    971.50/2,230 = 2,230/x
  3. Step 3: Cross multiply
    971.50x = 2,230 × 2,230
  4. Step 4: Simplify right side
    971.50x = 4,972,900
  5. Step 5: Solve for x
    x = 4,972,900/971.50
  6. Step 6: Final answer
    x = 5,118.79

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.