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Finding the Third Proportional to 3,111.75 and 6,957.56

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Solution

The third proportional to 3,111.75 and 6,957.56 is: 15,556.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.75 : 6,957.56 = 6,957.56 : x
  2. Step 2: Convert to fraction form
    3,111.75/6,957.56 = 6,957.56/x
  3. Step 3: Cross multiply
    3,111.75x = 6,957.56 × 6,957.56
  4. Step 4: Simplify right side
    3,111.75x = 48,407,675.94
  5. Step 5: Solve for x
    x = 48,407,675.94/3,111.75
  6. Step 6: Final answer
    x = 15,556.42

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Why These Related Problems?

These problems maintain the same ratio (2.24) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.