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Finding the Third Proportional to 5,720 and 8,641

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Solution

The third proportional to 5,720 and 8,641 is: 13,053.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,720 : 8,641 = 8,641 : x
  2. Step 2: Convert to fraction form
    5,720/8,641 = 8,641/x
  3. Step 3: Cross multiply
    5,720x = 8,641 × 8,641
  4. Step 4: Simplify right side
    5,720x = 74,666,881
  5. Step 5: Solve for x
    x = 74,666,881/5,720
  6. Step 6: Final answer
    x = 13,053.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.