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Finding the Fourth Proportional to 3,309.32, 4,958.79 and 1,228.82

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Solution

The fourth proportional to 3,309.32, 4,958.79 and 1,228.82 is: 1,841.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309.32 : 4,958.79 = 1,228.82 : x
  2. Step 2: Convert to fraction form
    3,309.32/4,958.79 = 1,228.82/x
  3. Step 3: Cross multiply
    3,309.32x = 4,958.79 × 1,228.82
  4. Step 4: Simplify right side
    3,309.32x = 6,093,469.19
  5. Step 5: Solve for x
    x = 6,093,469.19/3,309.32
  6. Step 6: Final answer
    x = 1,841.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.