Home / 3,919.92-5,880.96-1,324.68

Finding the Fourth Proportional to 3,919.92, 5,880.96 and 1,324.68

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Solution

The fourth proportional to 3,919.92, 5,880.96 and 1,324.68 is: 1,987.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.92 : 5,880.96 = 1,324.68 : x
  2. Step 2: Convert to fraction form
    3,919.92/5,880.96 = 1,324.68/x
  3. Step 3: Cross multiply
    3,919.92x = 5,880.96 × 1,324.68
  4. Step 4: Simplify right side
    3,919.92x = 7,790,390.09
  5. Step 5: Solve for x
    x = 7,790,390.09/3,919.92
  6. Step 6: Final answer
    x = 1,987.38

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1.5x scale

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.