Home / 2,163.87-2,986.14-1,169.15

Finding the Fourth Proportional to 2,163.87, 2,986.14 and 1,169.15

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Solution

The fourth proportional to 2,163.87, 2,986.14 and 1,169.15 is: 1,613.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.87 : 2,986.14 = 1,169.15 : x
  2. Step 2: Convert to fraction form
    2,163.87/2,986.14 = 1,169.15/x
  3. Step 3: Cross multiply
    2,163.87x = 2,986.14 × 1,169.15
  4. Step 4: Simplify right side
    2,163.87x = 3,491,231.87
  5. Step 5: Solve for x
    x = 3,491,231.87/2,163.87
  6. Step 6: Final answer
    x = 1,613.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.