Home / 6,982.40-9,635.47-3,996.12

Finding the Fourth Proportional to 6,982.40, 9,635.47 and 3,996.12

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Solution

The fourth proportional to 6,982.40, 9,635.47 and 3,996.12 is: 5,514.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,982.40 : 9,635.47 = 3,996.12 : x
  2. Step 2: Convert to fraction form
    6,982.40/9,635.47 = 3,996.12/x
  3. Step 3: Cross multiply
    6,982.40x = 9,635.47 × 3,996.12
  4. Step 4: Simplify right side
    6,982.40x = 38,504,494.38
  5. Step 5: Solve for x
    x = 38,504,494.38/6,982.40
  6. Step 6: Final answer
    x = 5,514.51

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Half scale
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Double scale
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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.