Home / 2,144.13-3,217.74-911.88

Finding the Fourth Proportional to 2,144.13, 3,217.74 and 911.88

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Solution

The fourth proportional to 2,144.13, 3,217.74 and 911.88 is: 1,368.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,144.13 : 3,217.74 = 911.88 : x
  2. Step 2: Convert to fraction form
    2,144.13/3,217.74 = 911.88/x
  3. Step 3: Cross multiply
    2,144.13x = 3,217.74 × 911.88
  4. Step 4: Simplify right side
    2,144.13x = 2,934,192.75
  5. Step 5: Solve for x
    x = 2,934,192.75/2,144.13
  6. Step 6: Final answer
    x = 1,368.48

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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.