Home / 3,979.23-5,939.73-3,690.09

Finding the Fourth Proportional to 3,979.23, 5,939.73 and 3,690.09

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Solution

The fourth proportional to 3,979.23, 5,939.73 and 3,690.09 is: 5,508.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.23 : 5,939.73 = 3,690.09 : x
  2. Step 2: Convert to fraction form
    3,979.23/5,939.73 = 3,690.09/x
  3. Step 3: Cross multiply
    3,979.23x = 5,939.73 × 3,690.09
  4. Step 4: Simplify right side
    3,979.23x = 21,918,138.28
  5. Step 5: Solve for x
    x = 21,918,138.28/3,979.23
  6. Step 6: Final answer
    x = 5,508.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.