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Finding the Third Proportional to 6,388.88 and 9,917.44

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Solution

The third proportional to 6,388.88 and 9,917.44 is: 15,394.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388.88 : 9,917.44 = 9,917.44 : x
  2. Step 2: Convert to fraction form
    6,388.88/9,917.44 = 9,917.44/x
  3. Step 3: Cross multiply
    6,388.88x = 9,917.44 × 9,917.44
  4. Step 4: Simplify right side
    6,388.88x = 98,355,566.57
  5. Step 5: Solve for x
    x = 98,355,566.57/6,388.88
  6. Step 6: Final answer
    x = 15,394.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.