Home / 3,319.62-4,979.43-1,239.54

Finding the Fourth Proportional to 3,319.62, 4,979.43 and 1,239.54

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Solution

The fourth proportional to 3,319.62, 4,979.43 and 1,239.54 is: 1,859.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.62 : 4,979.43 = 1,239.54 : x
  2. Step 2: Convert to fraction form
    3,319.62/4,979.43 = 1,239.54/x
  3. Step 3: Cross multiply
    3,319.62x = 4,979.43 × 1,239.54
  4. Step 4: Simplify right side
    3,319.62x = 6,172,202.66
  5. Step 5: Solve for x
    x = 6,172,202.66/3,319.62
  6. Step 6: Final answer
    x = 1,859.31

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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.