Home / 3,858.48-5,787.42-1,085

Finding the Fourth Proportional to 3,858.48, 5,787.42 and 1,085

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Solution

The fourth proportional to 3,858.48, 5,787.42 and 1,085 is: 1,627.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.48 : 5,787.42 = 1,085 : x
  2. Step 2: Convert to fraction form
    3,858.48/5,787.42 = 1,085/x
  3. Step 3: Cross multiply
    3,858.48x = 5,787.42 × 1,085
  4. Step 4: Simplify right side
    3,858.48x = 6,279,350.70
  5. Step 5: Solve for x
    x = 6,279,350.70/3,858.48
  6. Step 6: Final answer
    x = 1,627.42

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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.