Home / 3,318.45-4,577.94-1,989.87

Finding the Fourth Proportional to 3,318.45, 4,577.94 and 1,989.87

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Solution

The fourth proportional to 3,318.45, 4,577.94 and 1,989.87 is: 2,745.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.45 : 4,577.94 = 1,989.87 : x
  2. Step 2: Convert to fraction form
    3,318.45/4,577.94 = 1,989.87/x
  3. Step 3: Cross multiply
    3,318.45x = 4,577.94 × 1,989.87
  4. Step 4: Simplify right side
    3,318.45x = 9,109,505.47
  5. Step 5: Solve for x
    x = 9,109,505.47/3,318.45
  6. Step 6: Final answer
    x = 2,745.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.