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Finding the Third Proportional to 4,400 and 7,144

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Solution

The third proportional to 4,400 and 7,144 is: 11,599.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,400 : 7,144 = 7,144 : x
  2. Step 2: Convert to fraction form
    4,400/7,144 = 7,144/x
  3. Step 3: Cross multiply
    4,400x = 7,144 × 7,144
  4. Step 4: Simplify right side
    4,400x = 51,036,736
  5. Step 5: Solve for x
    x = 51,036,736/4,400
  6. Step 6: Final answer
    x = 11,599.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.