Home / 3,861.68-5,328.78-2,183.24

Finding the Fourth Proportional to 3,861.68, 5,328.78 and 2,183.24

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Solution

The fourth proportional to 3,861.68, 5,328.78 and 2,183.24 is: 3,012.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.68 : 5,328.78 = 2,183.24 : x
  2. Step 2: Convert to fraction form
    3,861.68/5,328.78 = 2,183.24/x
  3. Step 3: Cross multiply
    3,861.68x = 5,328.78 × 2,183.24
  4. Step 4: Simplify right side
    3,861.68x = 11,633,979.00
  5. Step 5: Solve for x
    x = 11,633,979.00/3,861.68
  6. Step 6: Final answer
    x = 3,012.68

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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.