Home / 3,319.73-4,979.60-1,239.71

Finding the Fourth Proportional to 3,319.73, 4,979.60 and 1,239.71

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Solution

The fourth proportional to 3,319.73, 4,979.60 and 1,239.71 is: 1,859.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.73 : 4,979.60 = 1,239.71 : x
  2. Step 2: Convert to fraction form
    3,319.73/4,979.60 = 1,239.71/x
  3. Step 3: Cross multiply
    3,319.73x = 4,979.60 × 1,239.71
  4. Step 4: Simplify right side
    3,319.73x = 6,173,236.96
  5. Step 5: Solve for x
    x = 6,173,236.96/3,319.73
  6. Step 6: Final answer
    x = 1,859.56

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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.