Home / 3,997.40-5,993.50-1,917.36

Finding the Fourth Proportional to 3,997.40, 5,993.50 and 1,917.36

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Solution

The fourth proportional to 3,997.40, 5,993.50 and 1,917.36 is: 2,874.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.40 : 5,993.50 = 1,917.36 : x
  2. Step 2: Convert to fraction form
    3,997.40/5,993.50 = 1,917.36/x
  3. Step 3: Cross multiply
    3,997.40x = 5,993.50 × 1,917.36
  4. Step 4: Simplify right side
    3,997.40x = 11,491,697.16
  5. Step 5: Solve for x
    x = 11,491,697.16/3,997.40
  6. Step 6: Final answer
    x = 2,874.79

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1.5x scale

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.