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Finding the Third Proportional to 3,417.19 and 8,257.78

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Solution

The third proportional to 3,417.19 and 8,257.78 is: 19,955.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,417.19 : 8,257.78 = 8,257.78 : x
  2. Step 2: Convert to fraction form
    3,417.19/8,257.78 = 8,257.78/x
  3. Step 3: Cross multiply
    3,417.19x = 8,257.78 × 8,257.78
  4. Step 4: Simplify right side
    3,417.19x = 68,190,951.17
  5. Step 5: Solve for x
    x = 68,190,951.17/3,417.19
  6. Step 6: Final answer
    x = 19,955.29

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.