Home / 3,278.24-4,523.78-1,861.56

Finding the Fourth Proportional to 3,278.24, 4,523.78 and 1,861.56

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Solution

The fourth proportional to 3,278.24, 4,523.78 and 1,861.56 is: 2,568.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.24 : 4,523.78 = 1,861.56 : x
  2. Step 2: Convert to fraction form
    3,278.24/4,523.78 = 1,861.56/x
  3. Step 3: Cross multiply
    3,278.24x = 4,523.78 × 1,861.56
  4. Step 4: Simplify right side
    3,278.24x = 8,421,287.90
  5. Step 5: Solve for x
    x = 8,421,287.90/3,278.24
  6. Step 6: Final answer
    x = 2,568.84

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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.