Home / 2,183.13-3,012.78-1,188.45

Finding the Fourth Proportional to 2,183.13, 3,012.78 and 1,188.45

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Solution

The fourth proportional to 2,183.13, 3,012.78 and 1,188.45 is: 1,640.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.13 : 3,012.78 = 1,188.45 : x
  2. Step 2: Convert to fraction form
    2,183.13/3,012.78 = 1,188.45/x
  3. Step 3: Cross multiply
    2,183.13x = 3,012.78 × 1,188.45
  4. Step 4: Simplify right side
    2,183.13x = 3,580,542.85
  5. Step 5: Solve for x
    x = 3,580,542.85/2,183.13
  6. Step 6: Final answer
    x = 1,640.10

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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.