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Finding the Third Proportional to 4,120 and 9,056

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Solution

The third proportional to 4,120 and 9,056 is: 19,905.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120 : 9,056 = 9,056 : x
  2. Step 2: Convert to fraction form
    4,120/9,056 = 9,056/x
  3. Step 3: Cross multiply
    4,120x = 9,056 × 9,056
  4. Step 4: Simplify right side
    4,120x = 82,011,136
  5. Step 5: Solve for x
    x = 82,011,136/4,120
  6. Step 6: Final answer
    x = 19,905.62

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.