Home / 2,183.15-3,012.81-1,188.50

Finding the Fourth Proportional to 2,183.15, 3,012.81 and 1,188.50

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Solution

The fourth proportional to 2,183.15, 3,012.81 and 1,188.50 is: 1,640.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.15 : 3,012.81 = 1,188.50 : x
  2. Step 2: Convert to fraction form
    2,183.15/3,012.81 = 1,188.50/x
  3. Step 3: Cross multiply
    2,183.15x = 3,012.81 × 1,188.50
  4. Step 4: Simplify right side
    2,183.15x = 3,580,709.62
  5. Step 5: Solve for x
    x = 3,580,709.62/2,183.15
  6. Step 6: Final answer
    x = 1,640.16

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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.