Home / 2,039.28-2,811.12-1,251.96

Finding the Fourth Proportional to 2,039.28, 2,811.12 and 1,251.96

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Solution

The fourth proportional to 2,039.28, 2,811.12 and 1,251.96 is: 1,725.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,039.28 : 2,811.12 = 1,251.96 : x
  2. Step 2: Convert to fraction form
    2,039.28/2,811.12 = 1,251.96/x
  3. Step 3: Cross multiply
    2,039.28x = 2,811.12 × 1,251.96
  4. Step 4: Simplify right side
    2,039.28x = 3,519,409.80
  5. Step 5: Solve for x
    x = 3,519,409.80/2,039.28
  6. Step 6: Final answer
    x = 1,725.81

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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.