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Finding the Fourth Proportional to 5,789.54, 7,990.17 and 3,431.90

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Solution

The fourth proportional to 5,789.54, 7,990.17 and 3,431.90 is: 4,736.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,789.54 : 7,990.17 = 3,431.90 : x
  2. Step 2: Convert to fraction form
    5,789.54/7,990.17 = 3,431.90/x
  3. Step 3: Cross multiply
    5,789.54x = 7,990.17 × 3,431.90
  4. Step 4: Simplify right side
    5,789.54x = 27,421,464.42
  5. Step 5: Solve for x
    x = 27,421,464.42/5,789.54
  6. Step 6: Final answer
    x = 4,736.38

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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.