Home / 2,236.94-3,087.13-1,292.78

Finding the Fourth Proportional to 2,236.94, 3,087.13 and 1,292.78

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Solution

The fourth proportional to 2,236.94, 3,087.13 and 1,292.78 is: 1,784.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,236.94 : 3,087.13 = 1,292.78 : x
  2. Step 2: Convert to fraction form
    2,236.94/3,087.13 = 1,292.78/x
  3. Step 3: Cross multiply
    2,236.94x = 3,087.13 × 1,292.78
  4. Step 4: Simplify right side
    2,236.94x = 3,990,979.92
  5. Step 5: Solve for x
    x = 3,990,979.92/2,236.94
  6. Step 6: Final answer
    x = 1,784.12

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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.