Home / 6,979.80-9,633.79-3,997.36

Finding the Fourth Proportional to 6,979.80, 9,633.79 and 3,997.36

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Solution

The fourth proportional to 6,979.80, 9,633.79 and 3,997.36 is: 5,517.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.80 : 9,633.79 = 3,997.36 : x
  2. Step 2: Convert to fraction form
    6,979.80/9,633.79 = 3,997.36/x
  3. Step 3: Cross multiply
    6,979.80x = 9,633.79 × 3,997.36
  4. Step 4: Simplify right side
    6,979.80x = 38,509,726.79
  5. Step 5: Solve for x
    x = 38,509,726.79/6,979.80
  6. Step 6: Final answer
    x = 5,517.31

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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.