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Finding the Third Proportional to 1,479.80 and 3,190.29

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Solution

The third proportional to 1,479.80 and 3,190.29 is: 6,877.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.80 : 3,190.29 = 3,190.29 : x
  2. Step 2: Convert to fraction form
    1,479.80/3,190.29 = 3,190.29/x
  3. Step 3: Cross multiply
    1,479.80x = 3,190.29 × 3,190.29
  4. Step 4: Simplify right side
    1,479.80x = 10,177,944.30
  5. Step 5: Solve for x
    x = 10,177,944.30/1,479.80
  6. Step 6: Final answer
    x = 6,877.93

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.