Home / 2,183.90-3,013.85-1,189.12

Finding the Fourth Proportional to 2,183.90, 3,013.85 and 1,189.12

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Solution

The fourth proportional to 2,183.90, 3,013.85 and 1,189.12 is: 1,641.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.90 : 3,013.85 = 1,189.12 : x
  2. Step 2: Convert to fraction form
    2,183.90/3,013.85 = 1,189.12/x
  3. Step 3: Cross multiply
    2,183.90x = 3,013.85 × 1,189.12
  4. Step 4: Simplify right side
    2,183.90x = 3,583,824.75
  5. Step 5: Solve for x
    x = 3,583,824.75/2,183.90
  6. Step 6: Final answer
    x = 1,641.02

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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.