Home / 2,183.03-3,012.44-1,238.78

Finding the Fourth Proportional to 2,183.03, 3,012.44 and 1,238.78

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Solution

The fourth proportional to 2,183.03, 3,012.44 and 1,238.78 is: 1,709.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.03 : 3,012.44 = 1,238.78 : x
  2. Step 2: Convert to fraction form
    2,183.03/3,012.44 = 1,238.78/x
  3. Step 3: Cross multiply
    2,183.03x = 3,012.44 × 1,238.78
  4. Step 4: Simplify right side
    2,183.03x = 3,731,729.17
  5. Step 5: Solve for x
    x = 3,731,729.17/2,183.03
  6. Step 6: Final answer
    x = 1,709.42

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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.