Home / 6,811.85-10,217.87-2,131.67

Finding the Fourth Proportional to 6,811.85, 10,217.87 and 2,131.67

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Solution

The fourth proportional to 6,811.85, 10,217.87 and 2,131.67 is: 3,197.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,811.85 : 10,217.87 = 2,131.67 : x
  2. Step 2: Convert to fraction form
    6,811.85/10,217.87 = 2,131.67/x
  3. Step 3: Cross multiply
    6,811.85x = 10,217.87 × 2,131.67
  4. Step 4: Simplify right side
    6,811.85x = 21,781,081.18
  5. Step 5: Solve for x
    x = 21,781,081.18/6,811.85
  6. Step 6: Final answer
    x = 3,197.53

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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.