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Finding the Fourth Proportional to 3,289.11, 4,933.50 and 823.88

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Solution

The fourth proportional to 3,289.11, 4,933.50 and 823.88 is: 1,235.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.11 : 4,933.50 = 823.88 : x
  2. Step 2: Convert to fraction form
    3,289.11/4,933.50 = 823.88/x
  3. Step 3: Cross multiply
    3,289.11x = 4,933.50 × 823.88
  4. Step 4: Simplify right side
    3,289.11x = 4,064,587.31
  5. Step 5: Solve for x
    x = 4,064,587.31/3,289.11
  6. Step 6: Final answer
    x = 1,235.77

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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.