Home / 3,861.72-5,329.28-2,183.18

Finding the Fourth Proportional to 3,861.72, 5,329.28 and 2,183.18

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Solution

The fourth proportional to 3,861.72, 5,329.28 and 2,183.18 is: 3,012.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.72 : 5,329.28 = 2,183.18 : x
  2. Step 2: Convert to fraction form
    3,861.72/5,329.28 = 2,183.18/x
  3. Step 3: Cross multiply
    3,861.72x = 5,329.28 × 2,183.18
  4. Step 4: Simplify right side
    3,861.72x = 11,634,777.51
  5. Step 5: Solve for x
    x = 11,634,777.51/3,861.72
  6. Step 6: Final answer
    x = 3,012.85

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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.