Home / 6,979.60-9,631.08-3,996.24

Finding the Fourth Proportional to 6,979.60, 9,631.08 and 3,996.24

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Solution

The fourth proportional to 6,979.60, 9,631.08 and 3,996.24 is: 5,514.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.60 : 9,631.08 = 3,996.24 : x
  2. Step 2: Convert to fraction form
    6,979.60/9,631.08 = 3,996.24/x
  3. Step 3: Cross multiply
    6,979.60x = 9,631.08 × 3,996.24
  4. Step 4: Simplify right side
    6,979.60x = 38,488,107.14
  5. Step 5: Solve for x
    x = 38,488,107.14/6,979.60
  6. Step 6: Final answer
    x = 5,514.37

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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.