Home / 3,209.52-4,428.90-1,812

Finding the Fourth Proportional to 3,209.52, 4,428.90 and 1,812

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Solution

The fourth proportional to 3,209.52, 4,428.90 and 1,812 is: 2,500.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.52 : 4,428.90 = 1,812 : x
  2. Step 2: Convert to fraction form
    3,209.52/4,428.90 = 1,812/x
  3. Step 3: Cross multiply
    3,209.52x = 4,428.90 × 1,812
  4. Step 4: Simplify right side
    3,209.52x = 8,025,166.80
  5. Step 5: Solve for x
    x = 8,025,166.80/3,209.52
  6. Step 6: Final answer
    x = 2,500.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.