Home / 4,311.20-6,448.80-3,926.72

Finding the Fourth Proportional to 4,311.20, 6,448.80 and 3,926.72

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Solution

The fourth proportional to 4,311.20, 6,448.80 and 3,926.72 is: 5,873.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,311.20 : 6,448.80 = 3,926.72 : x
  2. Step 2: Convert to fraction form
    4,311.20/6,448.80 = 3,926.72/x
  3. Step 3: Cross multiply
    4,311.20x = 6,448.80 × 3,926.72
  4. Step 4: Simplify right side
    4,311.20x = 25,322,631.94
  5. Step 5: Solve for x
    x = 25,322,631.94/4,311.20
  6. Step 6: Final answer
    x = 5,873.69

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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.