Home / 3,940.70-5,905.08-2,378.96

Finding the Fourth Proportional to 3,940.70, 5,905.08 and 2,378.96

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Solution

The fourth proportional to 3,940.70, 5,905.08 and 2,378.96 is: 3,564.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.70 : 5,905.08 = 2,378.96 : x
  2. Step 2: Convert to fraction form
    3,940.70/5,905.08 = 2,378.96/x
  3. Step 3: Cross multiply
    3,940.70x = 5,905.08 × 2,378.96
  4. Step 4: Simplify right side
    3,940.70x = 14,047,919.59
  5. Step 5: Solve for x
    x = 14,047,919.59/3,940.70
  6. Step 6: Final answer
    x = 3,564.83

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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.