Home / 3,850.21-5,313.29-2,081.81

Finding the Fourth Proportional to 3,850.21, 5,313.29 and 2,081.81

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Solution

The fourth proportional to 3,850.21, 5,313.29 and 2,081.81 is: 2,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.21 : 5,313.29 = 2,081.81 : x
  2. Step 2: Convert to fraction form
    3,850.21/5,313.29 = 2,081.81/x
  3. Step 3: Cross multiply
    3,850.21x = 5,313.29 × 2,081.81
  4. Step 4: Simplify right side
    3,850.21x = 11,061,263.13
  5. Step 5: Solve for x
    x = 11,061,263.13/3,850.21
  6. Step 6: Final answer
    x = 2,872.90

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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.