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Finding the Third Proportional to 976 and 2,127.25

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Solution

The third proportional to 976 and 2,127.25 is: 4,636.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    976 : 2,127.25 = 2,127.25 : x
  2. Step 2: Convert to fraction form
    976/2,127.25 = 2,127.25/x
  3. Step 3: Cross multiply
    976x = 2,127.25 × 2,127.25
  4. Step 4: Simplify right side
    976x = 4,525,192.56
  5. Step 5: Solve for x
    x = 4,525,192.56/976
  6. Step 6: Final answer
    x = 4,636.47

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.