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Finding the Third Proportional to 4,219.50 and 9,087.50

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Solution

The third proportional to 4,219.50 and 9,087.50 is: 19,571.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,219.50 : 9,087.50 = 9,087.50 : x
  2. Step 2: Convert to fraction form
    4,219.50/9,087.50 = 9,087.50/x
  3. Step 3: Cross multiply
    4,219.50x = 9,087.50 × 9,087.50
  4. Step 4: Simplify right side
    4,219.50x = 82,582,656.25
  5. Step 5: Solve for x
    x = 82,582,656.25/4,219.50
  6. Step 6: Final answer
    x = 19,571.67

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.