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Finding the Third Proportional to 1,212.94 and 1,961.63

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Solution

The third proportional to 1,212.94 and 1,961.63 is: 3,172.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212.94 : 1,961.63 = 1,961.63 : x
  2. Step 2: Convert to fraction form
    1,212.94/1,961.63 = 1,961.63/x
  3. Step 3: Cross multiply
    1,212.94x = 1,961.63 × 1,961.63
  4. Step 4: Simplify right side
    1,212.94x = 3,847,972.64
  5. Step 5: Solve for x
    x = 3,847,972.64/1,212.94
  6. Step 6: Final answer
    x = 3,172.44

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Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.