Home / 2,151.68-3,228-1,177.28

Finding the Fourth Proportional to 2,151.68, 3,228 and 1,177.28

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Solution

The fourth proportional to 2,151.68, 3,228 and 1,177.28 is: 1,766.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.68 : 3,228 = 1,177.28 : x
  2. Step 2: Convert to fraction form
    2,151.68/3,228 = 1,177.28/x
  3. Step 3: Cross multiply
    2,151.68x = 3,228 × 1,177.28
  4. Step 4: Simplify right side
    2,151.68x = 3,800,259.84
  5. Step 5: Solve for x
    x = 3,800,259.84/2,151.68
  6. Step 6: Final answer
    x = 1,766.18

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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.