Home / 3,984.75-5,503.91-2,811.06

Finding the Fourth Proportional to 3,984.75, 5,503.91 and 2,811.06

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Solution

The fourth proportional to 3,984.75, 5,503.91 and 2,811.06 is: 3,882.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.75 : 5,503.91 = 2,811.06 : x
  2. Step 2: Convert to fraction form
    3,984.75/5,503.91 = 2,811.06/x
  3. Step 3: Cross multiply
    3,984.75x = 5,503.91 × 2,811.06
  4. Step 4: Simplify right side
    3,984.75x = 15,471,821.24
  5. Step 5: Solve for x
    x = 15,471,821.24/3,984.75
  6. Step 6: Final answer
    x = 3,882.76

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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.