Home / 2,144.58-3,215.25-911.19

Finding the Fourth Proportional to 2,144.58, 3,215.25 and 911.19

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Solution

The fourth proportional to 2,144.58, 3,215.25 and 911.19 is: 1,366.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,144.58 : 3,215.25 = 911.19 : x
  2. Step 2: Convert to fraction form
    2,144.58/3,215.25 = 911.19/x
  3. Step 3: Cross multiply
    2,144.58x = 3,215.25 × 911.19
  4. Step 4: Simplify right side
    2,144.58x = 2,929,703.65
  5. Step 5: Solve for x
    x = 2,929,703.65/2,144.58
  6. Step 6: Final answer
    x = 1,366.10

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Similar ratio
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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.