Home / 3,228.78-4,836-3,150.21

Finding the Fourth Proportional to 3,228.78, 4,836 and 3,150.21

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Solution

The fourth proportional to 3,228.78, 4,836 and 3,150.21 is: 4,718.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228.78 : 4,836 = 3,150.21 : x
  2. Step 2: Convert to fraction form
    3,228.78/4,836 = 3,150.21/x
  3. Step 3: Cross multiply
    3,228.78x = 4,836 × 3,150.21
  4. Step 4: Simplify right side
    3,228.78x = 15,234,415.56
  5. Step 5: Solve for x
    x = 15,234,415.56/3,228.78
  6. Step 6: Final answer
    x = 4,718.32

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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.