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Finding the Third Proportional to 3,114.75 and 6,431.25

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Solution

The third proportional to 3,114.75 and 6,431.25 is: 13,279.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,114.75 : 6,431.25 = 6,431.25 : x
  2. Step 2: Convert to fraction form
    3,114.75/6,431.25 = 6,431.25/x
  3. Step 3: Cross multiply
    3,114.75x = 6,431.25 × 6,431.25
  4. Step 4: Simplify right side
    3,114.75x = 41,360,976.56
  5. Step 5: Solve for x
    x = 41,360,976.56/3,114.75
  6. Step 6: Final answer
    x = 13,279.07

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.