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Finding the Third Proportional to 2,161.69 and 2,316.09

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Solution

The third proportional to 2,161.69 and 2,316.09 is: 2,481.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.69 : 2,316.09 = 2,316.09 : x
  2. Step 2: Convert to fraction form
    2,161.69/2,316.09 = 2,316.09/x
  3. Step 3: Cross multiply
    2,161.69x = 2,316.09 × 2,316.09
  4. Step 4: Simplify right side
    2,161.69x = 5,364,290.26
  5. Step 5: Solve for x
    x = 5,364,290.26/2,161.69
  6. Step 6: Final answer
    x = 2,481.53

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.