Home / 3,278.56-4,523.66-1,861.90

Finding the Fourth Proportional to 3,278.56, 4,523.66 and 1,861.90

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Solution

The fourth proportional to 3,278.56, 4,523.66 and 1,861.90 is: 2,568.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.56 : 4,523.66 = 1,861.90 : x
  2. Step 2: Convert to fraction form
    3,278.56/4,523.66 = 1,861.90/x
  3. Step 3: Cross multiply
    3,278.56x = 4,523.66 × 1,861.90
  4. Step 4: Simplify right side
    3,278.56x = 8,422,602.55
  5. Step 5: Solve for x
    x = 8,422,602.55/3,278.56
  6. Step 6: Final answer
    x = 2,568.99

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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.