Home / 7,979.28-11,968.98-2,785.16

Finding the Fourth Proportional to 7,979.28, 11,968.98 and 2,785.16

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Solution

The fourth proportional to 7,979.28, 11,968.98 and 2,785.16 is: 4,177.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.28 : 11,968.98 = 2,785.16 : x
  2. Step 2: Convert to fraction form
    7,979.28/11,968.98 = 2,785.16/x
  3. Step 3: Cross multiply
    7,979.28x = 11,968.98 × 2,785.16
  4. Step 4: Simplify right side
    7,979.28x = 33,335,524.34
  5. Step 5: Solve for x
    x = 33,335,524.34/7,979.28
  6. Step 6: Final answer
    x = 4,177.76

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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.