Home / 5,218.07-7,198.79-2,979.45

Finding the Fourth Proportional to 5,218.07, 7,198.79 and 2,979.45

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Solution

The fourth proportional to 5,218.07, 7,198.79 and 2,979.45 is: 4,110.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.07 : 7,198.79 = 2,979.45 : x
  2. Step 2: Convert to fraction form
    5,218.07/7,198.79 = 2,979.45/x
  3. Step 3: Cross multiply
    5,218.07x = 7,198.79 × 2,979.45
  4. Step 4: Simplify right side
    5,218.07x = 21,448,419.97
  5. Step 5: Solve for x
    x = 21,448,419.97/5,218.07
  6. Step 6: Final answer
    x = 4,110.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.