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Finding the Third Proportional to 3,619.69 and 5,381.44

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Solution

The third proportional to 3,619.69 and 5,381.44 is: 8,000.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.69 : 5,381.44 = 5,381.44 : x
  2. Step 2: Convert to fraction form
    3,619.69/5,381.44 = 5,381.44/x
  3. Step 3: Cross multiply
    3,619.69x = 5,381.44 × 5,381.44
  4. Step 4: Simplify right side
    3,619.69x = 28,959,869.57
  5. Step 5: Solve for x
    x = 28,959,869.57/3,619.69
  6. Step 6: Final answer
    x = 8,000.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.