Home / 3,816.40-5,725.68-2,257.78

Finding the Fourth Proportional to 3,816.40, 5,725.68 and 2,257.78

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Solution

The fourth proportional to 3,816.40, 5,725.68 and 2,257.78 is: 3,387.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,816.40 : 5,725.68 = 2,257.78 : x
  2. Step 2: Convert to fraction form
    3,816.40/5,725.68 = 2,257.78/x
  3. Step 3: Cross multiply
    3,816.40x = 5,725.68 × 2,257.78
  4. Step 4: Simplify right side
    3,816.40x = 12,927,325.79
  5. Step 5: Solve for x
    x = 12,927,325.79/3,816.40
  6. Step 6: Final answer
    x = 3,387.31

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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.