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Finding the Fourth Proportional to 3,288.40, 4,932.60 and 823.26

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Solution

The fourth proportional to 3,288.40, 4,932.60 and 823.26 is: 1,234.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,288.40 : 4,932.60 = 823.26 : x
  2. Step 2: Convert to fraction form
    3,288.40/4,932.60 = 823.26/x
  3. Step 3: Cross multiply
    3,288.40x = 4,932.60 × 823.26
  4. Step 4: Simplify right side
    3,288.40x = 4,060,812.28
  5. Step 5: Solve for x
    x = 4,060,812.28/3,288.40
  6. Step 6: Final answer
    x = 1,234.89

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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.