Home / 2,082.28-3,121.26-928.84

Finding the Fourth Proportional to 2,082.28, 3,121.26 and 928.84

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Solution

The fourth proportional to 2,082.28, 3,121.26 and 928.84 is: 1,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.28 : 3,121.26 = 928.84 : x
  2. Step 2: Convert to fraction form
    2,082.28/3,121.26 = 928.84/x
  3. Step 3: Cross multiply
    2,082.28x = 3,121.26 × 928.84
  4. Step 4: Simplify right side
    2,082.28x = 2,899,151.14
  5. Step 5: Solve for x
    x = 2,899,151.14/2,082.28
  6. Step 6: Final answer
    x = 1,392.30

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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.