Home / 2,811.88-4,221.42-2,047.24

Finding the Fourth Proportional to 2,811.88, 4,221.42 and 2,047.24

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Solution

The fourth proportional to 2,811.88, 4,221.42 and 2,047.24 is: 3,073.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.88 : 4,221.42 = 2,047.24 : x
  2. Step 2: Convert to fraction form
    2,811.88/4,221.42 = 2,047.24/x
  3. Step 3: Cross multiply
    2,811.88x = 4,221.42 × 2,047.24
  4. Step 4: Simplify right side
    2,811.88x = 8,642,259.88
  5. Step 5: Solve for x
    x = 8,642,259.88/2,811.88
  6. Step 6: Final answer
    x = 3,073.48

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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.