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Finding the Third Proportional to 4,678.31 and 6,999.19

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Solution

The third proportional to 4,678.31 and 6,999.19 is: 10,471.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.31 : 6,999.19 = 6,999.19 : x
  2. Step 2: Convert to fraction form
    4,678.31/6,999.19 = 6,999.19/x
  3. Step 3: Cross multiply
    4,678.31x = 6,999.19 × 6,999.19
  4. Step 4: Simplify right side
    4,678.31x = 48,988,625.66
  5. Step 5: Solve for x
    x = 48,988,625.66/4,678.31
  6. Step 6: Final answer
    x = 10,471.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.