Home / 7,979.86-11,975.97-5,518.27

Finding the Fourth Proportional to 7,979.86, 11,975.97 and 5,518.27

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Solution

The fourth proportional to 7,979.86, 11,975.97 and 5,518.27 is: 8,281.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.86 : 11,975.97 = 5,518.27 : x
  2. Step 2: Convert to fraction form
    7,979.86/11,975.97 = 5,518.27/x
  3. Step 3: Cross multiply
    7,979.86x = 11,975.97 × 5,518.27
  4. Step 4: Simplify right side
    7,979.86x = 66,086,635.97
  5. Step 5: Solve for x
    x = 66,086,635.97/7,979.86
  6. Step 6: Final answer
    x = 8,281.68

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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.