Home / 1,997.53-2,754.43-1,399.83

Finding the Fourth Proportional to 1,997.53, 2,754.43 and 1,399.83

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Solution

The fourth proportional to 1,997.53, 2,754.43 and 1,399.83 is: 1,930.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.53 : 2,754.43 = 1,399.83 : x
  2. Step 2: Convert to fraction form
    1,997.53/2,754.43 = 1,399.83/x
  3. Step 3: Cross multiply
    1,997.53x = 2,754.43 × 1,399.83
  4. Step 4: Simplify right side
    1,997.53x = 3,855,733.75
  5. Step 5: Solve for x
    x = 3,855,733.75/1,997.53
  6. Step 6: Final answer
    x = 1,930.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.