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Finding the Third Proportional to 3,278 and 7,136.50

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Solution

The third proportional to 3,278 and 7,136.50 is: 15,536.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278 : 7,136.50 = 7,136.50 : x
  2. Step 2: Convert to fraction form
    3,278/7,136.50 = 7,136.50/x
  3. Step 3: Cross multiply
    3,278x = 7,136.50 × 7,136.50
  4. Step 4: Simplify right side
    3,278x = 50,929,632.25
  5. Step 5: Solve for x
    x = 50,929,632.25/3,278
  6. Step 6: Final answer
    x = 15,536.80

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.