Home / 3,783.98-5,220.20-2,211.38

Finding the Fourth Proportional to 3,783.98, 5,220.20 and 2,211.38

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Solution

The fourth proportional to 3,783.98, 5,220.20 and 2,211.38 is: 3,050.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.98 : 5,220.20 = 2,211.38 : x
  2. Step 2: Convert to fraction form
    3,783.98/5,220.20 = 2,211.38/x
  3. Step 3: Cross multiply
    3,783.98x = 5,220.20 × 2,211.38
  4. Step 4: Simplify right side
    3,783.98x = 11,543,845.88
  5. Step 5: Solve for x
    x = 11,543,845.88/3,783.98
  6. Step 6: Final answer
    x = 3,050.72

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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.