Home / 3,188.30-4,398.73-1,861.83

Finding the Fourth Proportional to 3,188.30, 4,398.73 and 1,861.83

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Solution

The fourth proportional to 3,188.30, 4,398.73 and 1,861.83 is: 2,568.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.30 : 4,398.73 = 1,861.83 : x
  2. Step 2: Convert to fraction form
    3,188.30/4,398.73 = 1,861.83/x
  3. Step 3: Cross multiply
    3,188.30x = 4,398.73 × 1,861.83
  4. Step 4: Simplify right side
    3,188.30x = 8,189,682.82
  5. Step 5: Solve for x
    x = 8,189,682.82/3,188.30
  6. Step 6: Final answer
    x = 2,568.67

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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.