Home / 3,115.70-4,673.55-2,131.55

Finding the Fourth Proportional to 3,115.70, 4,673.55 and 2,131.55

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Solution

The fourth proportional to 3,115.70, 4,673.55 and 2,131.55 is: 3,197.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.70 : 4,673.55 = 2,131.55 : x
  2. Step 2: Convert to fraction form
    3,115.70/4,673.55 = 2,131.55/x
  3. Step 3: Cross multiply
    3,115.70x = 4,673.55 × 2,131.55
  4. Step 4: Simplify right side
    3,115.70x = 9,961,905.50
  5. Step 5: Solve for x
    x = 9,961,905.50/3,115.70
  6. Step 6: Final answer
    x = 3,197.33

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