Home / 4,272.20-6,396.76-2,215.88

Finding the Fourth Proportional to 4,272.20, 6,396.76 and 2,215.88

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Solution

The fourth proportional to 4,272.20, 6,396.76 and 2,215.88 is: 3,317.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,272.20 : 6,396.76 = 2,215.88 : x
  2. Step 2: Convert to fraction form
    4,272.20/6,396.76 = 2,215.88/x
  3. Step 3: Cross multiply
    4,272.20x = 6,396.76 × 2,215.88
  4. Step 4: Simplify right side
    4,272.20x = 14,174,452.55
  5. Step 5: Solve for x
    x = 14,174,452.55/4,272.20
  6. Step 6: Final answer
    x = 3,317.83

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1.5x scale

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.