Home / 5,181.80-7,769.87-4,082.90

Finding the Fourth Proportional to 5,181.80, 7,769.87 and 4,082.90

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Solution

The fourth proportional to 5,181.80, 7,769.87 and 4,082.90 is: 6,122.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.80 : 7,769.87 = 4,082.90 : x
  2. Step 2: Convert to fraction form
    5,181.80/7,769.87 = 4,082.90/x
  3. Step 3: Cross multiply
    5,181.80x = 7,769.87 × 4,082.90
  4. Step 4: Simplify right side
    5,181.80x = 31,723,581.81
  5. Step 5: Solve for x
    x = 31,723,581.81/5,181.80
  6. Step 6: Final answer
    x = 6,122.12

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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.