Home / 7,819.60-11,727.96-2,120.67

Finding the Fourth Proportional to 7,819.60, 11,727.96 and 2,120.67

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Solution

The fourth proportional to 7,819.60, 11,727.96 and 2,120.67 is: 3,180.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.60 : 11,727.96 = 2,120.67 : x
  2. Step 2: Convert to fraction form
    7,819.60/11,727.96 = 2,120.67/x
  3. Step 3: Cross multiply
    7,819.60x = 11,727.96 × 2,120.67
  4. Step 4: Simplify right side
    7,819.60x = 24,871,132.93
  5. Step 5: Solve for x
    x = 24,871,132.93/7,819.60
  6. Step 6: Final answer
    x = 3,180.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.