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Finding the Third Proportional to 2,019.94 and 3,138.75

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Solution

The third proportional to 2,019.94 and 3,138.75 is: 4,877.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019.94 : 3,138.75 = 3,138.75 : x
  2. Step 2: Convert to fraction form
    2,019.94/3,138.75 = 3,138.75/x
  3. Step 3: Cross multiply
    2,019.94x = 3,138.75 × 3,138.75
  4. Step 4: Simplify right side
    2,019.94x = 9,851,751.56
  5. Step 5: Solve for x
    x = 9,851,751.56/2,019.94
  6. Step 6: Final answer
    x = 4,877.26

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.