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Finding the Third Proportional to 4,144 and 7,880

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Solution

The third proportional to 4,144 and 7,880 is: 14,984.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,144 : 7,880 = 7,880 : x
  2. Step 2: Convert to fraction form
    4,144/7,880 = 7,880/x
  3. Step 3: Cross multiply
    4,144x = 7,880 × 7,880
  4. Step 4: Simplify right side
    4,144x = 62,094,400
  5. Step 5: Solve for x
    x = 62,094,400/4,144
  6. Step 6: Final answer
    x = 14,984.17

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Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.