Home / 3,917.92-5,869.60-1,971.48

Finding the Fourth Proportional to 3,917.92, 5,869.60 and 1,971.48

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Solution

The fourth proportional to 3,917.92, 5,869.60 and 1,971.48 is: 2,953.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.92 : 5,869.60 = 1,971.48 : x
  2. Step 2: Convert to fraction form
    3,917.92/5,869.60 = 1,971.48/x
  3. Step 3: Cross multiply
    3,917.92x = 5,869.60 × 1,971.48
  4. Step 4: Simplify right side
    3,917.92x = 11,571,799.01
  5. Step 5: Solve for x
    x = 11,571,799.01/3,917.92
  6. Step 6: Final answer
    x = 2,953.56

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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.