Home / 2,217.16-3,323.76-917.80

Finding the Fourth Proportional to 2,217.16, 3,323.76 and 917.80

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Solution

The fourth proportional to 2,217.16, 3,323.76 and 917.80 is: 1,375.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.16 : 3,323.76 = 917.80 : x
  2. Step 2: Convert to fraction form
    2,217.16/3,323.76 = 917.80/x
  3. Step 3: Cross multiply
    2,217.16x = 3,323.76 × 917.80
  4. Step 4: Simplify right side
    2,217.16x = 3,050,546.93
  5. Step 5: Solve for x
    x = 3,050,546.93/2,217.16
  6. Step 6: Final answer
    x = 1,375.88

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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.