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Finding the Third Proportional to 2,815.31 and 4,617.84

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Solution

The third proportional to 2,815.31 and 4,617.84 is: 7,574.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.31 : 4,617.84 = 4,617.84 : x
  2. Step 2: Convert to fraction form
    2,815.31/4,617.84 = 4,617.84/x
  3. Step 3: Cross multiply
    2,815.31x = 4,617.84 × 4,617.84
  4. Step 4: Simplify right side
    2,815.31x = 21,324,480.90
  5. Step 5: Solve for x
    x = 21,324,480.90/2,815.31
  6. Step 6: Final answer
    x = 7,574.46

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.