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Finding the Third Proportional to 1,489.50 and 3,206.25

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Solution

The third proportional to 1,489.50 and 3,206.25 is: 6,901.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.50 : 3,206.25 = 3,206.25 : x
  2. Step 2: Convert to fraction form
    1,489.50/3,206.25 = 3,206.25/x
  3. Step 3: Cross multiply
    1,489.50x = 3,206.25 × 3,206.25
  4. Step 4: Simplify right side
    1,489.50x = 10,280,039.06
  5. Step 5: Solve for x
    x = 10,280,039.06/1,489.50
  6. Step 6: Final answer
    x = 6,901.67

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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.