Home / 3,979.68-5,971.62-2,339.40

Finding the Fourth Proportional to 3,979.68, 5,971.62 and 2,339.40

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Solution

The fourth proportional to 3,979.68, 5,971.62 and 2,339.40 is: 3,510.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.68 : 5,971.62 = 2,339.40 : x
  2. Step 2: Convert to fraction form
    3,979.68/5,971.62 = 2,339.40/x
  3. Step 3: Cross multiply
    3,979.68x = 5,971.62 × 2,339.40
  4. Step 4: Simplify right side
    3,979.68x = 13,970,007.83
  5. Step 5: Solve for x
    x = 13,970,007.83/3,979.68
  6. Step 6: Final answer
    x = 3,510.33

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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.