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Finding the Fourth Proportional to 5,785.22, 7,979.48 and 3,993.39

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Solution

The fourth proportional to 5,785.22, 7,979.48 and 3,993.39 is: 5,508.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,785.22 : 7,979.48 = 3,993.39 : x
  2. Step 2: Convert to fraction form
    5,785.22/7,979.48 = 3,993.39/x
  3. Step 3: Cross multiply
    5,785.22x = 7,979.48 × 3,993.39
  4. Step 4: Simplify right side
    5,785.22x = 31,865,175.64
  5. Step 5: Solve for x
    x = 31,865,175.64/5,785.22
  6. Step 6: Final answer
    x = 5,508.03

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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.