Home / 3,856.80-5,787.62-2,216.54

Finding the Fourth Proportional to 3,856.80, 5,787.62 and 2,216.54

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Solution

The fourth proportional to 3,856.80, 5,787.62 and 2,216.54 is: 3,326.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.80 : 5,787.62 = 2,216.54 : x
  2. Step 2: Convert to fraction form
    3,856.80/5,787.62 = 2,216.54/x
  3. Step 3: Cross multiply
    3,856.80x = 5,787.62 × 2,216.54
  4. Step 4: Simplify right side
    3,856.80x = 12,828,491.23
  5. Step 5: Solve for x
    x = 12,828,491.23/3,856.80
  6. Step 6: Final answer
    x = 3,326.20

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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.