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Finding the Third Proportional to 1,078.09 and 2,318.19

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Solution

The third proportional to 1,078.09 and 2,318.19 is: 4,984.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078.09 : 2,318.19 = 2,318.19 : x
  2. Step 2: Convert to fraction form
    1,078.09/2,318.19 = 2,318.19/x
  3. Step 3: Cross multiply
    1,078.09x = 2,318.19 × 2,318.19
  4. Step 4: Simplify right side
    1,078.09x = 5,373,993.29
  5. Step 5: Solve for x
    x = 5,373,993.29/1,078.09
  6. Step 6: Final answer
    x = 4,984.72

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.