Home / 2,040.14-2,815.38-1,108.64

Finding the Fourth Proportional to 2,040.14, 2,815.38 and 1,108.64

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Solution

The fourth proportional to 2,040.14, 2,815.38 and 1,108.64 is: 1,529.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,040.14 : 2,815.38 = 1,108.64 : x
  2. Step 2: Convert to fraction form
    2,040.14/2,815.38 = 1,108.64/x
  3. Step 3: Cross multiply
    2,040.14x = 2,815.38 × 1,108.64
  4. Step 4: Simplify right side
    2,040.14x = 3,121,242.88
  5. Step 5: Solve for x
    x = 3,121,242.88/2,040.14
  6. Step 6: Final answer
    x = 1,529.92

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Half scale
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Double 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.