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Finding the Third Proportional to 3,505 and 8,222.50

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Solution

The third proportional to 3,505 and 8,222.50 is: 19,289.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,505 : 8,222.50 = 8,222.50 : x
  2. Step 2: Convert to fraction form
    3,505/8,222.50 = 8,222.50/x
  3. Step 3: Cross multiply
    3,505x = 8,222.50 × 8,222.50
  4. Step 4: Simplify right side
    3,505x = 67,609,506.25
  5. Step 5: Solve for x
    x = 67,609,506.25/3,505
  6. Step 6: Final answer
    x = 19,289.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.