Home / 2,040.38-2,815.73-1,108.88

Finding the Fourth Proportional to 2,040.38, 2,815.73 and 1,108.88

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Solution

The fourth proportional to 2,040.38, 2,815.73 and 1,108.88 is: 1,530.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,040.38 : 2,815.73 = 1,108.88 : x
  2. Step 2: Convert to fraction form
    2,040.38/2,815.73 = 1,108.88/x
  3. Step 3: Cross multiply
    2,040.38x = 2,815.73 × 1,108.88
  4. Step 4: Simplify right side
    2,040.38x = 3,122,287.06
  5. Step 5: Solve for x
    x = 3,122,287.06/2,040.38
  6. Step 6: Final answer
    x = 1,530.25

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Half scale
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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.