Home / 2,218.08-3,321.60-1,122.96

Finding the Fourth Proportional to 2,218.08, 3,321.60 and 1,122.96

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Solution

The fourth proportional to 2,218.08, 3,321.60 and 1,122.96 is: 1,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.08 : 3,321.60 = 1,122.96 : x
  2. Step 2: Convert to fraction form
    2,218.08/3,321.60 = 1,122.96/x
  3. Step 3: Cross multiply
    2,218.08x = 3,321.60 × 1,122.96
  4. Step 4: Simplify right side
    2,218.08x = 3,730,023.94
  5. Step 5: Solve for x
    x = 3,730,023.94/2,218.08
  6. Step 6: Final answer
    x = 1,681.65

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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.