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Finding the Third Proportional to 781.88 and 1,723.13

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Solution

The third proportional to 781.88 and 1,723.13 is: 3,797.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    781.88 : 1,723.13 = 1,723.13 : x
  2. Step 2: Convert to fraction form
    781.88/1,723.13 = 1,723.13/x
  3. Step 3: Cross multiply
    781.88x = 1,723.13 × 1,723.13
  4. Step 4: Simplify right side
    781.88x = 2,969,159.77
  5. Step 5: Solve for x
    x = 2,969,159.77/781.88
  6. Step 6: Final answer
    x = 3,797.49

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.