Home / 3,111.91-4,664.84-1,998.19

Finding the Fourth Proportional to 3,111.91, 4,664.84 and 1,998.19

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Solution

The fourth proportional to 3,111.91, 4,664.84 and 1,998.19 is: 2,995.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.91 : 4,664.84 = 1,998.19 : x
  2. Step 2: Convert to fraction form
    3,111.91/4,664.84 = 1,998.19/x
  3. Step 3: Cross multiply
    3,111.91x = 4,664.84 × 1,998.19
  4. Step 4: Simplify right side
    3,111.91x = 9,321,236.64
  5. Step 5: Solve for x
    x = 9,321,236.64/3,111.91
  6. Step 6: Final answer
    x = 2,995.34

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Double scale
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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.