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Finding the Third Proportional to 3,155.20 and 6,891.33

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Solution

The third proportional to 3,155.20 and 6,891.33 is: 15,051.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.20 : 6,891.33 = 6,891.33 : x
  2. Step 2: Convert to fraction form
    3,155.20/6,891.33 = 6,891.33/x
  3. Step 3: Cross multiply
    3,155.20x = 6,891.33 × 6,891.33
  4. Step 4: Simplify right side
    3,155.20x = 47,490,403.33
  5. Step 5: Solve for x
    x = 47,490,403.33/3,155.20
  6. Step 6: Final answer
    x = 15,051.46

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.