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Finding the Third Proportional to 3,428 and 8,090

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Solution

The third proportional to 3,428 and 8,090 is: 19,092.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428 : 8,090 = 8,090 : x
  2. Step 2: Convert to fraction form
    3,428/8,090 = 8,090/x
  3. Step 3: Cross multiply
    3,428x = 8,090 × 8,090
  4. Step 4: Simplify right side
    3,428x = 65,448,100
  5. Step 5: Solve for x
    x = 65,448,100/3,428
  6. Step 6: Final answer
    x = 19,092.21

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.