Home / 2,218.35-3,321.83-2,152.65

Finding the Fourth Proportional to 2,218.35, 3,321.83 and 2,152.65

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Solution

The fourth proportional to 2,218.35, 3,321.83 and 2,152.65 is: 3,223.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.35 : 3,321.83 = 2,152.65 : x
  2. Step 2: Convert to fraction form
    2,218.35/3,321.83 = 2,152.65/x
  3. Step 3: Cross multiply
    2,218.35x = 3,321.83 × 2,152.65
  4. Step 4: Simplify right side
    2,218.35x = 7,150,733.74
  5. Step 5: Solve for x
    x = 7,150,733.74/2,218.35
  6. Step 6: Final answer
    x = 3,223.45

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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.