Home / 3,188.09-4,398.93-1,861.54

Finding the Fourth Proportional to 3,188.09, 4,398.93 and 1,861.54

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Solution

The fourth proportional to 3,188.09, 4,398.93 and 1,861.54 is: 2,568.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.09 : 4,398.93 = 1,861.54 : x
  2. Step 2: Convert to fraction form
    3,188.09/4,398.93 = 1,861.54/x
  3. Step 3: Cross multiply
    3,188.09x = 4,398.93 × 1,861.54
  4. Step 4: Simplify right side
    3,188.09x = 8,188,790.76
  5. Step 5: Solve for x
    x = 8,188,790.76/3,188.09
  6. Step 6: Final answer
    x = 2,568.55

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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.