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Finding the Fourth Proportional to 5,789.25, 7,990.25 and 3,305.25

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Solution

The fourth proportional to 5,789.25, 7,990.25 and 3,305.25 is: 4,561.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,789.25 : 7,990.25 = 3,305.25 : x
  2. Step 2: Convert to fraction form
    5,789.25/7,990.25 = 3,305.25/x
  3. Step 3: Cross multiply
    5,789.25x = 7,990.25 × 3,305.25
  4. Step 4: Simplify right side
    5,789.25x = 26,409,757.29
  5. Step 5: Solve for x
    x = 26,409,757.29/5,789.25
  6. Step 6: Final answer
    x = 4,561.86

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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.