Home / 3,917.20-5,877.72-1,969.04

Finding the Fourth Proportional to 3,917.20, 5,877.72 and 1,969.04

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Solution

The fourth proportional to 3,917.20, 5,877.72 and 1,969.04 is: 2,954.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.20 : 5,877.72 = 1,969.04 : x
  2. Step 2: Convert to fraction form
    3,917.20/5,877.72 = 1,969.04/x
  3. Step 3: Cross multiply
    3,917.20x = 5,877.72 × 1,969.04
  4. Step 4: Simplify right side
    3,917.20x = 11,573,465.79
  5. Step 5: Solve for x
    x = 11,573,465.79/3,917.20
  6. Step 6: Final answer
    x = 2,954.53

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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.