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Finding the Third Proportional to 1,392.75 and 3,028.75

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Solution

The third proportional to 1,392.75 and 3,028.75 is: 6,586.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.75 : 3,028.75 = 3,028.75 : x
  2. Step 2: Convert to fraction form
    1,392.75/3,028.75 = 3,028.75/x
  3. Step 3: Cross multiply
    1,392.75x = 3,028.75 × 3,028.75
  4. Step 4: Simplify right side
    1,392.75x = 9,173,326.56
  5. Step 5: Solve for x
    x = 9,173,326.56/1,392.75
  6. Step 6: Final answer
    x = 6,586.48

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.