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Finding the Third Proportional to 1,691.51 and 2,716.66

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Solution

The third proportional to 1,691.51 and 2,716.66 is: 4,363.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.51 : 2,716.66 = 2,716.66 : x
  2. Step 2: Convert to fraction form
    1,691.51/2,716.66 = 2,716.66/x
  3. Step 3: Cross multiply
    1,691.51x = 2,716.66 × 2,716.66
  4. Step 4: Simplify right side
    1,691.51x = 7,380,263.63
  5. Step 5: Solve for x
    x = 7,380,263.63/1,691.51
  6. Step 6: Final answer
    x = 4,363.13

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.