Home / 3,942.74-5,913.30-1,861.86

Finding the Fourth Proportional to 3,942.74, 5,913.30 and 1,861.86

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Solution

The fourth proportional to 3,942.74, 5,913.30 and 1,861.86 is: 2,792.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.74 : 5,913.30 = 1,861.86 : x
  2. Step 2: Convert to fraction form
    3,942.74/5,913.30 = 1,861.86/x
  3. Step 3: Cross multiply
    3,942.74x = 5,913.30 × 1,861.86
  4. Step 4: Simplify right side
    3,942.74x = 11,009,736.74
  5. Step 5: Solve for x
    x = 11,009,736.74/3,942.74
  6. Step 6: Final answer
    x = 2,792.41

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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.