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Finding the Third Proportional to 788.75 and 1,729.38

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Solution

The third proportional to 788.75 and 1,729.38 is: 3,791.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.75 : 1,729.38 = 1,729.38 : x
  2. Step 2: Convert to fraction form
    788.75/1,729.38 = 1,729.38/x
  3. Step 3: Cross multiply
    788.75x = 1,729.38 × 1,729.38
  4. Step 4: Simplify right side
    788.75x = 2,990,737.89
  5. Step 5: Solve for x
    x = 2,990,737.89/788.75
  6. Step 6: Final answer
    x = 3,791.74

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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.