Home / 7,979.96-11,975.41-2,785.84

Finding the Fourth Proportional to 7,979.96, 11,975.41 and 2,785.84

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Solution

The fourth proportional to 7,979.96, 11,975.41 and 2,785.84 is: 4,180.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.96 : 11,975.41 = 2,785.84 : x
  2. Step 2: Convert to fraction form
    7,979.96/11,975.41 = 2,785.84/x
  3. Step 3: Cross multiply
    7,979.96x = 11,975.41 × 2,785.84
  4. Step 4: Simplify right side
    7,979.96x = 33,361,516.32
  5. Step 5: Solve for x
    x = 33,361,516.32/7,979.96
  6. Step 6: Final answer
    x = 4,180.66

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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.