Home / 3,778.75-5,214.94-2,185.69

Finding the Fourth Proportional to 3,778.75, 5,214.94 and 2,185.69

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Solution

The fourth proportional to 3,778.75, 5,214.94 and 2,185.69 is: 3,016.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.75 : 5,214.94 = 2,185.69 : x
  2. Step 2: Convert to fraction form
    3,778.75/5,214.94 = 2,185.69/x
  3. Step 3: Cross multiply
    3,778.75x = 5,214.94 × 2,185.69
  4. Step 4: Simplify right side
    3,778.75x = 11,398,245.60
  5. Step 5: Solve for x
    x = 11,398,245.60/3,778.75
  6. Step 6: Final answer
    x = 3,016.40

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Find fourth proportional to 1,889.38, 2,607.47 and 1,092.85
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.