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Finding the Third Proportional to 1,213.58 and 2,618.89

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Solution

The third proportional to 1,213.58 and 2,618.89 is: 5,651.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.58 : 2,618.89 = 2,618.89 : x
  2. Step 2: Convert to fraction form
    1,213.58/2,618.89 = 2,618.89/x
  3. Step 3: Cross multiply
    1,213.58x = 2,618.89 × 2,618.89
  4. Step 4: Simplify right side
    1,213.58x = 6,858,608.57
  5. Step 5: Solve for x
    x = 6,858,608.57/1,213.58
  6. Step 6: Final answer
    x = 5,651.57

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.