Home / 3,861.37-5,787.49-1,394.31

Finding the Fourth Proportional to 3,861.37, 5,787.49 and 1,394.31

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Solution

The fourth proportional to 3,861.37, 5,787.49 and 1,394.31 is: 2,089.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.37 : 5,787.49 = 1,394.31 : x
  2. Step 2: Convert to fraction form
    3,861.37/5,787.49 = 1,394.31/x
  3. Step 3: Cross multiply
    3,861.37x = 5,787.49 × 1,394.31
  4. Step 4: Simplify right side
    3,861.37x = 8,069,555.18
  5. Step 5: Solve for x
    x = 8,069,555.18/3,861.37
  6. Step 6: Final answer
    x = 2,089.82

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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.