Home / 2,811.96-4,218.48-1,352.88

Finding the Fourth Proportional to 2,811.96, 4,218.48 and 1,352.88

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Solution

The fourth proportional to 2,811.96, 4,218.48 and 1,352.88 is: 2,029.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.96 : 4,218.48 = 1,352.88 : x
  2. Step 2: Convert to fraction form
    2,811.96/4,218.48 = 1,352.88/x
  3. Step 3: Cross multiply
    2,811.96x = 4,218.48 × 1,352.88
  4. Step 4: Simplify right side
    2,811.96x = 5,707,097.22
  5. Step 5: Solve for x
    x = 5,707,097.22/2,811.96
  6. Step 6: Final answer
    x = 2,029.58

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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.