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Finding the Third Proportional to 1,912.50 and 2,580.75

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Solution

The third proportional to 1,912.50 and 2,580.75 is: 3,482.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.50 : 2,580.75 = 2,580.75 : x
  2. Step 2: Convert to fraction form
    1,912.50/2,580.75 = 2,580.75/x
  3. Step 3: Cross multiply
    1,912.50x = 2,580.75 × 2,580.75
  4. Step 4: Simplify right side
    1,912.50x = 6,660,270.56
  5. Step 5: Solve for x
    x = 6,660,270.56/1,912.50
  6. Step 6: Final answer
    x = 3,482.49

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.