Home / 2,228.96-3,076.39-1,285.38

Finding the Fourth Proportional to 2,228.96, 3,076.39 and 1,285.38

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Solution

The fourth proportional to 2,228.96, 3,076.39 and 1,285.38 is: 1,774.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,228.96 : 3,076.39 = 1,285.38 : x
  2. Step 2: Convert to fraction form
    2,228.96/3,076.39 = 1,285.38/x
  3. Step 3: Cross multiply
    2,228.96x = 3,076.39 × 1,285.38
  4. Step 4: Simplify right side
    2,228.96x = 3,954,330.18
  5. Step 5: Solve for x
    x = 3,954,330.18/2,228.96
  6. Step 6: Final answer
    x = 1,774.07

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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.