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Finding the Third Proportional to 4,240 and 9,209

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Solution

The third proportional to 4,240 and 9,209 is: 20,001.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,240 : 9,209 = 9,209 : x
  2. Step 2: Convert to fraction form
    4,240/9,209 = 9,209/x
  3. Step 3: Cross multiply
    4,240x = 9,209 × 9,209
  4. Step 4: Simplify right side
    4,240x = 84,805,681
  5. Step 5: Solve for x
    x = 84,805,681/4,240
  6. Step 6: Final answer
    x = 20,001.34

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1.5x scale

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.