Home / 3,786.87-5,680.41-1,013.57

Finding the Fourth Proportional to 3,786.87, 5,680.41 and 1,013.57

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Solution

The fourth proportional to 3,786.87, 5,680.41 and 1,013.57 is: 1,520.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.87 : 5,680.41 = 1,013.57 : x
  2. Step 2: Convert to fraction form
    3,786.87/5,680.41 = 1,013.57/x
  3. Step 3: Cross multiply
    3,786.87x = 5,680.41 × 1,013.57
  4. Step 4: Simplify right side
    3,786.87x = 5,757,493.16
  5. Step 5: Solve for x
    x = 5,757,493.16/3,786.87
  6. Step 6: Final answer
    x = 1,520.38

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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.