Home / 2,144.25-3,217.29-911.94

Finding the Fourth Proportional to 2,144.25, 3,217.29 and 911.94

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Solution

The fourth proportional to 2,144.25, 3,217.29 and 911.94 is: 1,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,144.25 : 3,217.29 = 911.94 : x
  2. Step 2: Convert to fraction form
    2,144.25/3,217.29 = 911.94/x
  3. Step 3: Cross multiply
    2,144.25x = 3,217.29 × 911.94
  4. Step 4: Simplify right side
    2,144.25x = 2,933,975.44
  5. Step 5: Solve for x
    x = 2,933,975.44/2,144.25
  6. Step 6: Final answer
    x = 1,368.30

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1.5x scale

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.