Home / 3,986.78-5,977.68-3,471.62

Finding the Fourth Proportional to 3,986.78, 5,977.68 and 3,471.62

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Solution

The fourth proportional to 3,986.78, 5,977.68 and 3,471.62 is: 5,205.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.78 : 5,977.68 = 3,471.62 : x
  2. Step 2: Convert to fraction form
    3,986.78/5,977.68 = 3,471.62/x
  3. Step 3: Cross multiply
    3,986.78x = 5,977.68 × 3,471.62
  4. Step 4: Simplify right side
    3,986.78x = 20,752,233.44
  5. Step 5: Solve for x
    x = 20,752,233.44/3,986.78
  6. Step 6: Final answer
    x = 5,205.26

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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.