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Finding the Third Proportional to 2,020.50 and 3,119.75

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Solution

The third proportional to 2,020.50 and 3,119.75 is: 4,817.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.50 : 3,119.75 = 3,119.75 : x
  2. Step 2: Convert to fraction form
    2,020.50/3,119.75 = 3,119.75/x
  3. Step 3: Cross multiply
    2,020.50x = 3,119.75 × 3,119.75
  4. Step 4: Simplify right side
    2,020.50x = 9,732,840.06
  5. Step 5: Solve for x
    x = 9,732,840.06/2,020.50
  6. Step 6: Final answer
    x = 4,817.05

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.