Home / 2,811.44-4,217.88-1,272.56

Finding the Fourth Proportional to 2,811.44, 4,217.88 and 1,272.56

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Solution

The fourth proportional to 2,811.44, 4,217.88 and 1,272.56 is: 1,909.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.44 : 4,217.88 = 1,272.56 : x
  2. Step 2: Convert to fraction form
    2,811.44/4,217.88 = 1,272.56/x
  3. Step 3: Cross multiply
    2,811.44x = 4,217.88 × 1,272.56
  4. Step 4: Simplify right side
    2,811.44x = 5,367,505.37
  5. Step 5: Solve for x
    x = 5,367,505.37/2,811.44
  6. Step 6: Final answer
    x = 1,909.17

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1.5x scale

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.