Home / 4,213-6,321.18-2,131.88

Finding the Fourth Proportional to 4,213, 6,321.18 and 2,131.88

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Solution

The fourth proportional to 4,213, 6,321.18 and 2,131.88 is: 3,198.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,213 : 6,321.18 = 2,131.88 : x
  2. Step 2: Convert to fraction form
    4,213/6,321.18 = 2,131.88/x
  3. Step 3: Cross multiply
    4,213x = 6,321.18 × 2,131.88
  4. Step 4: Simplify right side
    4,213x = 13,475,997.22
  5. Step 5: Solve for x
    x = 13,475,997.22/4,213
  6. Step 6: Final answer
    x = 3,198.67

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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.