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Finding the Third Proportional to 757.78 and 1,656.47

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Solution

The third proportional to 757.78 and 1,656.47 is: 3,620.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.78 : 1,656.47 = 1,656.47 : x
  2. Step 2: Convert to fraction form
    757.78/1,656.47 = 1,656.47/x
  3. Step 3: Cross multiply
    757.78x = 1,656.47 × 1,656.47
  4. Step 4: Simplify right side
    757.78x = 2,743,888.72
  5. Step 5: Solve for x
    x = 2,743,888.72/757.78
  6. Step 6: Final answer
    x = 3,620.95

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.