Home / 2,183.10-3,013.65-1,299.21

Finding the Fourth Proportional to 2,183.10, 3,013.65 and 1,299.21

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Solution

The fourth proportional to 2,183.10, 3,013.65 and 1,299.21 is: 1,793.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.10 : 3,013.65 = 1,299.21 : x
  2. Step 2: Convert to fraction form
    2,183.10/3,013.65 = 1,299.21/x
  3. Step 3: Cross multiply
    2,183.10x = 3,013.65 × 1,299.21
  4. Step 4: Simplify right side
    2,183.10x = 3,915,364.22
  5. Step 5: Solve for x
    x = 3,915,364.22/2,183.10
  6. Step 6: Final answer
    x = 1,793.49

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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.