Home / 3,850.76-5,313.96-2,278.88

Finding the Fourth Proportional to 3,850.76, 5,313.96 and 2,278.88

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Solution

The fourth proportional to 3,850.76, 5,313.96 and 2,278.88 is: 3,144.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.76 : 5,313.96 = 2,278.88 : x
  2. Step 2: Convert to fraction form
    3,850.76/5,313.96 = 2,278.88/x
  3. Step 3: Cross multiply
    3,850.76x = 5,313.96 × 2,278.88
  4. Step 4: Simplify right side
    3,850.76x = 12,109,877.16
  5. Step 5: Solve for x
    x = 12,109,877.16/3,850.76
  6. Step 6: Final answer
    x = 3,144.80

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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.