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Finding the Third Proportional to 3,290.63 and 5,087.81

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Solution

The third proportional to 3,290.63 and 5,087.81 is: 7,866.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.63 : 5,087.81 = 5,087.81 : x
  2. Step 2: Convert to fraction form
    3,290.63/5,087.81 = 5,087.81/x
  3. Step 3: Cross multiply
    3,290.63x = 5,087.81 × 5,087.81
  4. Step 4: Simplify right side
    3,290.63x = 25,885,836.04
  5. Step 5: Solve for x
    x = 25,885,836.04/3,290.63
  6. Step 6: Final answer
    x = 7,866.54

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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.