Home / 7,979.13-11,968.56-2,135.70

Finding the Fourth Proportional to 7,979.13, 11,968.56 and 2,135.70

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Solution

The fourth proportional to 7,979.13, 11,968.56 and 2,135.70 is: 3,203.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.13 : 11,968.56 = 2,135.70 : x
  2. Step 2: Convert to fraction form
    7,979.13/11,968.56 = 2,135.70/x
  3. Step 3: Cross multiply
    7,979.13x = 11,968.56 × 2,135.70
  4. Step 4: Simplify right side
    7,979.13x = 25,561,253.59
  5. Step 5: Solve for x
    x = 25,561,253.59/7,979.13
  6. Step 6: Final answer
    x = 3,203.51

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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.