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Finding the Third Proportional to 3,280 and 7,082

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Solution

The third proportional to 3,280 and 7,082 is: 15,291.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280 : 7,082 = 7,082 : x
  2. Step 2: Convert to fraction form
    3,280/7,082 = 7,082/x
  3. Step 3: Cross multiply
    3,280x = 7,082 × 7,082
  4. Step 4: Simplify right side
    3,280x = 50,154,724
  5. Step 5: Solve for x
    x = 50,154,724/3,280
  6. Step 6: Final answer
    x = 15,291.07

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.