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Finding the Third Proportional to 1,707.75 and 4,138.59

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Solution

The third proportional to 1,707.75 and 4,138.59 is: 10,029.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,707.75 : 4,138.59 = 4,138.59 : x
  2. Step 2: Convert to fraction form
    1,707.75/4,138.59 = 4,138.59/x
  3. Step 3: Cross multiply
    1,707.75x = 4,138.59 × 4,138.59
  4. Step 4: Simplify right side
    1,707.75x = 17,127,958.23
  5. Step 5: Solve for x
    x = 17,127,958.23/1,707.75
  6. Step 6: Final answer
    x = 10,029.55

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.