Home / 3,115.32-4,298.97-1,936.38

Finding the Fourth Proportional to 3,115.32, 4,298.97 and 1,936.38

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Solution

The fourth proportional to 3,115.32, 4,298.97 and 1,936.38 is: 2,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.32 : 4,298.97 = 1,936.38 : x
  2. Step 2: Convert to fraction form
    3,115.32/4,298.97 = 1,936.38/x
  3. Step 3: Cross multiply
    3,115.32x = 4,298.97 × 1,936.38
  4. Step 4: Simplify right side
    3,115.32x = 8,324,439.53
  5. Step 5: Solve for x
    x = 8,324,439.53/3,115.32
  6. Step 6: Final answer
    x = 2,672.10

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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.