Home / 7,986.16-11,979.84-2,719.54

Finding the Fourth Proportional to 7,986.16, 11,979.84 and 2,719.54

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Solution

The fourth proportional to 7,986.16, 11,979.84 and 2,719.54 is: 4,079.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.16 : 11,979.84 = 2,719.54 : x
  2. Step 2: Convert to fraction form
    7,986.16/11,979.84 = 2,719.54/x
  3. Step 3: Cross multiply
    7,986.16x = 11,979.84 × 2,719.54
  4. Step 4: Simplify right side
    7,986.16x = 32,579,594.17
  5. Step 5: Solve for x
    x = 32,579,594.17/7,986.16
  6. Step 6: Final answer
    x = 4,079.51

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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.