Home / 3,240.53-4,471.82-1,981.64

Finding the Fourth Proportional to 3,240.53, 4,471.82 and 1,981.64

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Solution

The fourth proportional to 3,240.53, 4,471.82 and 1,981.64 is: 2,734.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.53 : 4,471.82 = 1,981.64 : x
  2. Step 2: Convert to fraction form
    3,240.53/4,471.82 = 1,981.64/x
  3. Step 3: Cross multiply
    3,240.53x = 4,471.82 × 1,981.64
  4. Step 4: Simplify right side
    3,240.53x = 8,861,546.09
  5. Step 5: Solve for x
    x = 8,861,546.09/3,240.53
  6. Step 6: Final answer
    x = 2,734.60

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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.