Home / 5,082.28-7,623.92-2,120.12

Finding the Fourth Proportional to 5,082.28, 7,623.92 and 2,120.12

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Solution

The fourth proportional to 5,082.28, 7,623.92 and 2,120.12 is: 3,180.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,082.28 : 7,623.92 = 2,120.12 : x
  2. Step 2: Convert to fraction form
    5,082.28/7,623.92 = 2,120.12/x
  3. Step 3: Cross multiply
    5,082.28x = 7,623.92 × 2,120.12
  4. Step 4: Simplify right side
    5,082.28x = 16,163,625.27
  5. Step 5: Solve for x
    x = 16,163,625.27/5,082.28
  6. Step 6: Final answer
    x = 3,180.39

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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.