Home / 5,129.97-7,678.83-3,539.38

Finding the Fourth Proportional to 5,129.97, 7,678.83 and 3,539.38

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Solution

The fourth proportional to 5,129.97, 7,678.83 and 3,539.38 is: 5,297.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.97 : 7,678.83 = 3,539.38 : x
  2. Step 2: Convert to fraction form
    5,129.97/7,678.83 = 3,539.38/x
  3. Step 3: Cross multiply
    5,129.97x = 7,678.83 × 3,539.38
  4. Step 4: Simplify right side
    5,129.97x = 27,178,297.33
  5. Step 5: Solve for x
    x = 27,178,297.33/5,129.97
  6. Step 6: Final answer
    x = 5,297.94

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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.