Home / 3,917.40-5,877.45-1,725.81

Finding the Fourth Proportional to 3,917.40, 5,877.45 and 1,725.81

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Solution

The fourth proportional to 3,917.40, 5,877.45 and 1,725.81 is: 2,589.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.40 : 5,877.45 = 1,725.81 : x
  2. Step 2: Convert to fraction form
    3,917.40/5,877.45 = 1,725.81/x
  3. Step 3: Cross multiply
    3,917.40x = 5,877.45 × 1,725.81
  4. Step 4: Simplify right side
    3,917.40x = 10,143,361.98
  5. Step 5: Solve for x
    x = 10,143,361.98/3,917.40
  6. Step 6: Final answer
    x = 2,589.31

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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.