Home / 2,183.23-3,012.80-1,239.00

Finding the Fourth Proportional to 2,183.23, 3,012.80 and 1,239.00

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Solution

The fourth proportional to 2,183.23, 3,012.80 and 1,239.00 is: 1,709.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.23 : 3,012.80 = 1,239.00 : x
  2. Step 2: Convert to fraction form
    2,183.23/3,012.80 = 1,239.00/x
  3. Step 3: Cross multiply
    2,183.23x = 3,012.80 × 1,239.00
  4. Step 4: Simplify right side
    2,183.23x = 3,732,837.94
  5. Step 5: Solve for x
    x = 3,732,837.94/2,183.23
  6. Step 6: Final answer
    x = 1,709.78

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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.