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Finding the Third Proportional to 2,940.75 and 6,131.25

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Solution

The third proportional to 2,940.75 and 6,131.25 is: 12,783.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.75 : 6,131.25 = 6,131.25 : x
  2. Step 2: Convert to fraction form
    2,940.75/6,131.25 = 6,131.25/x
  3. Step 3: Cross multiply
    2,940.75x = 6,131.25 × 6,131.25
  4. Step 4: Simplify right side
    2,940.75x = 37,592,226.56
  5. Step 5: Solve for x
    x = 37,592,226.56/2,940.75
  6. Step 6: Final answer
    x = 12,783.21

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.