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Finding the Fourth Proportional to 3,327.53, 4,990.85 and 862.37

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Solution

The fourth proportional to 3,327.53, 4,990.85 and 862.37 is: 1,293.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,327.53 : 4,990.85 = 862.37 : x
  2. Step 2: Convert to fraction form
    3,327.53/4,990.85 = 862.37/x
  3. Step 3: Cross multiply
    3,327.53x = 4,990.85 × 862.37
  4. Step 4: Simplify right side
    3,327.53x = 4,303,955.00
  5. Step 5: Solve for x
    x = 4,303,955.00/3,327.53
  6. Step 6: Final answer
    x = 1,293.44

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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.