Home / 2,166.03-3,249.45-685.63

Finding the Fourth Proportional to 2,166.03, 3,249.45 and 685.63

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Solution

The fourth proportional to 2,166.03, 3,249.45 and 685.63 is: 1,028.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.03 : 3,249.45 = 685.63 : x
  2. Step 2: Convert to fraction form
    2,166.03/3,249.45 = 685.63/x
  3. Step 3: Cross multiply
    2,166.03x = 3,249.45 × 685.63
  4. Step 4: Simplify right side
    2,166.03x = 2,227,902.44
  5. Step 5: Solve for x
    x = 2,227,902.44/2,166.03
  6. Step 6: Final answer
    x = 1,028.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.