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Finding the Third Proportional to 3,111.75 and 6,896.81

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Solution

The third proportional to 3,111.75 and 6,896.81 is: 15,285.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.75 : 6,896.81 = 6,896.81 : x
  2. Step 2: Convert to fraction form
    3,111.75/6,896.81 = 6,896.81/x
  3. Step 3: Cross multiply
    3,111.75x = 6,896.81 × 6,896.81
  4. Step 4: Simplify right side
    3,111.75x = 47,566,022.66
  5. Step 5: Solve for x
    x = 47,566,022.66/3,111.75
  6. Step 6: Final answer
    x = 15,285.94

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.