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Finding the Fourth Proportional to 3,269.31, 4,903.92 and 804.15

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Solution

The fourth proportional to 3,269.31, 4,903.92 and 804.15 is: 1,206.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,269.31 : 4,903.92 = 804.15 : x
  2. Step 2: Convert to fraction form
    3,269.31/4,903.92 = 804.15/x
  3. Step 3: Cross multiply
    3,269.31x = 4,903.92 × 804.15
  4. Step 4: Simplify right side
    3,269.31x = 3,943,485.83
  5. Step 5: Solve for x
    x = 3,943,485.83/3,269.31
  6. Step 6: Final answer
    x = 1,206.21

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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.