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Finding the Third Proportional to 3,328.50 and 7,278

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Solution

The third proportional to 3,328.50 and 7,278 is: 15,913.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,328.50 : 7,278 = 7,278 : x
  2. Step 2: Convert to fraction form
    3,328.50/7,278 = 7,278/x
  3. Step 3: Cross multiply
    3,328.50x = 7,278 × 7,278
  4. Step 4: Simplify right side
    3,328.50x = 52,969,284
  5. Step 5: Solve for x
    x = 52,969,284/3,328.50
  6. Step 6: Final answer
    x = 15,913.86

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.