Home / 2,278.92-3,145.44-1,905.25

Finding the Fourth Proportional to 2,278.92, 3,145.44 and 1,905.25

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Solution

The fourth proportional to 2,278.92, 3,145.44 and 1,905.25 is: 2,629.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.92 : 3,145.44 = 1,905.25 : x
  2. Step 2: Convert to fraction form
    2,278.92/3,145.44 = 1,905.25/x
  3. Step 3: Cross multiply
    2,278.92x = 3,145.44 × 1,905.25
  4. Step 4: Simplify right side
    2,278.92x = 5,992,850.39
  5. Step 5: Solve for x
    x = 5,992,850.39/2,278.92
  6. Step 6: Final answer
    x = 2,629.69

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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.