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Finding the Third Proportional to 6,997.50 and 7,908.75

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Solution

The third proportional to 6,997.50 and 7,908.75 is: 8,938.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,997.50 : 7,908.75 = 7,908.75 : x
  2. Step 2: Convert to fraction form
    6,997.50/7,908.75 = 7,908.75/x
  3. Step 3: Cross multiply
    6,997.50x = 7,908.75 × 7,908.75
  4. Step 4: Simplify right side
    6,997.50x = 62,548,326.56
  5. Step 5: Solve for x
    x = 62,548,326.56/6,997.50
  6. Step 6: Final answer
    x = 8,938.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.