Home / 1,992.38-2,749.49-1,108.19

Finding the Fourth Proportional to 1,992.38, 2,749.49 and 1,108.19

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Solution

The fourth proportional to 1,992.38, 2,749.49 and 1,108.19 is: 1,529.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.38 : 2,749.49 = 1,108.19 : x
  2. Step 2: Convert to fraction form
    1,992.38/2,749.49 = 1,108.19/x
  3. Step 3: Cross multiply
    1,992.38x = 2,749.49 × 1,108.19
  4. Step 4: Simplify right side
    1,992.38x = 3,046,966.97
  5. Step 5: Solve for x
    x = 3,046,966.97/1,992.38
  6. Step 6: Final answer
    x = 1,529.31

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.