Home / 4,257.12-6,379.84-2,172.74

Finding the Fourth Proportional to 4,257.12, 6,379.84 and 2,172.74

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Solution

The fourth proportional to 4,257.12, 6,379.84 and 2,172.74 is: 3,256.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,257.12 : 6,379.84 = 2,172.74 : x
  2. Step 2: Convert to fraction form
    4,257.12/6,379.84 = 2,172.74/x
  3. Step 3: Cross multiply
    4,257.12x = 6,379.84 × 2,172.74
  4. Step 4: Simplify right side
    4,257.12x = 13,861,704.38
  5. Step 5: Solve for x
    x = 13,861,704.38/4,257.12
  6. Step 6: Final answer
    x = 3,256.12

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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.