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Finding the Third Proportional to 1,220.06 and 1,891.69

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Solution

The third proportional to 1,220.06 and 1,891.69 is: 2,933.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.06 : 1,891.69 = 1,891.69 : x
  2. Step 2: Convert to fraction form
    1,220.06/1,891.69 = 1,891.69/x
  3. Step 3: Cross multiply
    1,220.06x = 1,891.69 × 1,891.69
  4. Step 4: Simplify right side
    1,220.06x = 3,578,481.60
  5. Step 5: Solve for x
    x = 3,578,481.60/1,220.06
  6. Step 6: Final answer
    x = 2,933.03

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.