Home / 7,979.16-11,968.80-2,785.04

Finding the Fourth Proportional to 7,979.16, 11,968.80 and 2,785.04

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Solution

The fourth proportional to 7,979.16, 11,968.80 and 2,785.04 is: 4,177.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.16 : 11,968.80 = 2,785.04 : x
  2. Step 2: Convert to fraction form
    7,979.16/11,968.80 = 2,785.04/x
  3. Step 3: Cross multiply
    7,979.16x = 11,968.80 × 2,785.04
  4. Step 4: Simplify right side
    7,979.16x = 33,333,586.75
  5. Step 5: Solve for x
    x = 33,333,586.75/7,979.16
  6. Step 6: Final answer
    x = 4,177.58

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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.