Home / 3,828.87-5,282.21-2,235.40

Finding the Fourth Proportional to 3,828.87, 5,282.21 and 2,235.40

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Solution

The fourth proportional to 3,828.87, 5,282.21 and 2,235.40 is: 3,083.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828.87 : 5,282.21 = 2,235.40 : x
  2. Step 2: Convert to fraction form
    3,828.87/5,282.21 = 2,235.40/x
  3. Step 3: Cross multiply
    3,828.87x = 5,282.21 × 2,235.40
  4. Step 4: Simplify right side
    3,828.87x = 11,807,844.62
  5. Step 5: Solve for x
    x = 11,807,844.62/3,828.87
  6. Step 6: Final answer
    x = 3,083.90

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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.