Home / 3,772.19-5,205.87-2,179.15

Finding the Fourth Proportional to 3,772.19, 5,205.87 and 2,179.15

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Solution

The fourth proportional to 3,772.19, 5,205.87 and 2,179.15 is: 3,007.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,772.19 : 5,205.87 = 2,179.15 : x
  2. Step 2: Convert to fraction form
    3,772.19/5,205.87 = 2,179.15/x
  3. Step 3: Cross multiply
    3,772.19x = 5,205.87 × 2,179.15
  4. Step 4: Simplify right side
    3,772.19x = 11,344,358.60
  5. Step 5: Solve for x
    x = 11,344,358.60/3,772.19
  6. Step 6: Final answer
    x = 3,007.36

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Half scale
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Find fourth proportional to 3,773.19, 5,207.25 and 2,180.15
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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.