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Finding the Third Proportional to 2,790.38 and 4,324.31

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Solution

The third proportional to 2,790.38 and 4,324.31 is: 6,701.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.38 : 4,324.31 = 4,324.31 : x
  2. Step 2: Convert to fraction form
    2,790.38/4,324.31 = 4,324.31/x
  3. Step 3: Cross multiply
    2,790.38x = 4,324.31 × 4,324.31
  4. Step 4: Simplify right side
    2,790.38x = 18,699,678.60
  5. Step 5: Solve for x
    x = 18,699,678.60/2,790.38
  6. Step 6: Final answer
    x = 6,701.49

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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.