Home / 3,969.28-5,958.24-2,720.80

Finding the Fourth Proportional to 3,969.28, 5,958.24 and 2,720.80

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Solution

The fourth proportional to 3,969.28, 5,958.24 and 2,720.80 is: 4,084.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.28 : 5,958.24 = 2,720.80 : x
  2. Step 2: Convert to fraction form
    3,969.28/5,958.24 = 2,720.80/x
  3. Step 3: Cross multiply
    3,969.28x = 5,958.24 × 2,720.80
  4. Step 4: Simplify right side
    3,969.28x = 16,211,179.39
  5. Step 5: Solve for x
    x = 16,211,179.39/3,969.28
  6. Step 6: Final answer
    x = 4,084.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.