Home / 3,920.15-5,880.23-1,324.91

Finding the Fourth Proportional to 3,920.15, 5,880.23 and 1,324.91

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Solution

The fourth proportional to 3,920.15, 5,880.23 and 1,324.91 is: 1,987.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.15 : 5,880.23 = 1,324.91 : x
  2. Step 2: Convert to fraction form
    3,920.15/5,880.23 = 1,324.91/x
  3. Step 3: Cross multiply
    3,920.15x = 5,880.23 × 1,324.91
  4. Step 4: Simplify right side
    3,920.15x = 7,790,775.53
  5. Step 5: Solve for x
    x = 7,790,775.53/3,920.15
  6. Step 6: Final answer
    x = 1,987.37

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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.