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Finding the Third Proportional to 2,490.75 and 4,470.19

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Solution

The third proportional to 2,490.75 and 4,470.19 is: 8,022.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.75 : 4,470.19 = 4,470.19 : x
  2. Step 2: Convert to fraction form
    2,490.75/4,470.19 = 4,470.19/x
  3. Step 3: Cross multiply
    2,490.75x = 4,470.19 × 4,470.19
  4. Step 4: Simplify right side
    2,490.75x = 19,982,576.29
  5. Step 5: Solve for x
    x = 19,982,576.29/2,490.75
  6. Step 6: Final answer
    x = 8,022.71

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.