Home / 3,188.17-4,399.75-1,861.39

Finding the Fourth Proportional to 3,188.17, 4,399.75 and 1,861.39

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Solution

The fourth proportional to 3,188.17, 4,399.75 and 1,861.39 is: 2,568.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.17 : 4,399.75 = 1,861.39 : x
  2. Step 2: Convert to fraction form
    3,188.17/4,399.75 = 1,861.39/x
  3. Step 3: Cross multiply
    3,188.17x = 4,399.75 × 1,861.39
  4. Step 4: Simplify right side
    3,188.17x = 8,189,650.65
  5. Step 5: Solve for x
    x = 8,189,650.65/3,188.17
  6. Step 6: Final answer
    x = 2,568.76

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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.