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Finding the Third Proportional to 4,240 and 9,200

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Solution

The third proportional to 4,240 and 9,200 is: 19,962.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,240 : 9,200 = 9,200 : x
  2. Step 2: Convert to fraction form
    4,240/9,200 = 9,200/x
  3. Step 3: Cross multiply
    4,240x = 9,200 × 9,200
  4. Step 4: Simplify right side
    4,240x = 84,640,000
  5. Step 5: Solve for x
    x = 84,640,000/4,240
  6. Step 6: Final answer
    x = 19,962.26

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.