Home / 5,382.87-8,072.83-3,405.53

Finding the Fourth Proportional to 5,382.87, 8,072.83 and 3,405.53

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Solution

The fourth proportional to 5,382.87, 8,072.83 and 3,405.53 is: 5,107.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.87 : 8,072.83 = 3,405.53 : x
  2. Step 2: Convert to fraction form
    5,382.87/8,072.83 = 3,405.53/x
  3. Step 3: Cross multiply
    5,382.87x = 8,072.83 × 3,405.53
  4. Step 4: Simplify right side
    5,382.87x = 27,492,243.78
  5. Step 5: Solve for x
    x = 27,492,243.78/5,382.87
  6. Step 6: Final answer
    x = 5,107.36

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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.