Home / 3,702.76-5,109.66-2,131.12

Finding the Fourth Proportional to 3,702.76, 5,109.66 and 2,131.12

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Solution

The fourth proportional to 3,702.76, 5,109.66 and 2,131.12 is: 2,940.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,702.76 : 5,109.66 = 2,131.12 : x
  2. Step 2: Convert to fraction form
    3,702.76/5,109.66 = 2,131.12/x
  3. Step 3: Cross multiply
    3,702.76x = 5,109.66 × 2,131.12
  4. Step 4: Simplify right side
    3,702.76x = 10,889,298.62
  5. Step 5: Solve for x
    x = 10,889,298.62/3,702.76
  6. Step 6: Final answer
    x = 2,940.86

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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.