Home / 7,979.31-11,961.63-4,082.76

Finding the Fourth Proportional to 7,979.31, 11,961.63 and 4,082.76

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Solution

The fourth proportional to 7,979.31, 11,961.63 and 4,082.76 is: 6,120.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.31 : 11,961.63 = 4,082.76 : x
  2. Step 2: Convert to fraction form
    7,979.31/11,961.63 = 4,082.76/x
  3. Step 3: Cross multiply
    7,979.31x = 11,961.63 × 4,082.76
  4. Step 4: Simplify right side
    7,979.31x = 48,836,464.50
  5. Step 5: Solve for x
    x = 48,836,464.50/7,979.31
  6. Step 6: Final answer
    x = 6,120.39

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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.