Home / 3,778.28-5,664.70-1,905.34

Finding the Fourth Proportional to 3,778.28, 5,664.70 and 1,905.34

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Solution

The fourth proportional to 3,778.28, 5,664.70 and 1,905.34 is: 2,856.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.28 : 5,664.70 = 1,905.34 : x
  2. Step 2: Convert to fraction form
    3,778.28/5,664.70 = 1,905.34/x
  3. Step 3: Cross multiply
    3,778.28x = 5,664.70 × 1,905.34
  4. Step 4: Simplify right side
    3,778.28x = 10,793,179.50
  5. Step 5: Solve for x
    x = 10,793,179.50/3,778.28
  6. Step 6: Final answer
    x = 2,856.64

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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.