Home / 3,920.22-5,880.27-3,145.08

Finding the Fourth Proportional to 3,920.22, 5,880.27 and 3,145.08

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Solution

The fourth proportional to 3,920.22, 5,880.27 and 3,145.08 is: 4,717.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.22 : 5,880.27 = 3,145.08 : x
  2. Step 2: Convert to fraction form
    3,920.22/5,880.27 = 3,145.08/x
  3. Step 3: Cross multiply
    3,920.22x = 5,880.27 × 3,145.08
  4. Step 4: Simplify right side
    3,920.22x = 18,493,919.57
  5. Step 5: Solve for x
    x = 18,493,919.57/3,920.22
  6. Step 6: Final answer
    x = 4,717.57

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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.