Home / 6,979.09-9,631.68-3,995.86

Finding the Fourth Proportional to 6,979.09, 9,631.68 and 3,995.86

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Solution

The fourth proportional to 6,979.09, 9,631.68 and 3,995.86 is: 5,514.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.09 : 9,631.68 = 3,995.86 : x
  2. Step 2: Convert to fraction form
    6,979.09/9,631.68 = 3,995.86/x
  3. Step 3: Cross multiply
    6,979.09x = 9,631.68 × 3,995.86
  4. Step 4: Simplify right side
    6,979.09x = 38,486,844.84
  5. Step 5: Solve for x
    x = 38,486,844.84/6,979.09
  6. Step 6: Final answer
    x = 5,514.59

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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.