Home / 7,979.55-11,969.34-2,785.41

Finding the Fourth Proportional to 7,979.55, 11,969.34 and 2,785.41

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Solution

The fourth proportional to 7,979.55, 11,969.34 and 2,785.41 is: 4,178.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.55 : 11,969.34 = 2,785.41 : x
  2. Step 2: Convert to fraction form
    7,979.55/11,969.34 = 2,785.41/x
  3. Step 3: Cross multiply
    7,979.55x = 11,969.34 × 2,785.41
  4. Step 4: Simplify right side
    7,979.55x = 33,339,519.33
  5. Step 5: Solve for x
    x = 33,339,519.33/7,979.55
  6. Step 6: Final answer
    x = 4,178.12

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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.