Home / 3,850.39-5,313.90-2,278.72

Finding the Fourth Proportional to 3,850.39, 5,313.90 and 2,278.72

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Solution

The fourth proportional to 3,850.39, 5,313.90 and 2,278.72 is: 3,144.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.39 : 5,313.90 = 2,278.72 : x
  2. Step 2: Convert to fraction form
    3,850.39/5,313.90 = 2,278.72/x
  3. Step 3: Cross multiply
    3,850.39x = 5,313.90 × 2,278.72
  4. Step 4: Simplify right side
    3,850.39x = 12,108,890.21
  5. Step 5: Solve for x
    x = 12,108,890.21/3,850.39
  6. Step 6: Final answer
    x = 3,144.85

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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.