Home / 3,228.71-4,455.25-1,812.20

Finding the Fourth Proportional to 3,228.71, 4,455.25 and 1,812.20

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Solution

The fourth proportional to 3,228.71, 4,455.25 and 1,812.20 is: 2,500.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228.71 : 4,455.25 = 1,812.20 : x
  2. Step 2: Convert to fraction form
    3,228.71/4,455.25 = 1,812.20/x
  3. Step 3: Cross multiply
    3,228.71x = 4,455.25 × 1,812.20
  4. Step 4: Simplify right side
    3,228.71x = 8,073,794.99
  5. Step 5: Solve for x
    x = 8,073,794.99/3,228.71
  6. Step 6: Final answer
    x = 2,500.63

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1.5x scale

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.