Home / 4,286.79-6,431.18-1,821.69

Finding the Fourth Proportional to 4,286.79, 6,431.18 and 1,821.69

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Solution

The fourth proportional to 4,286.79, 6,431.18 and 1,821.69 is: 2,732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,286.79 : 6,431.18 = 1,821.69 : x
  2. Step 2: Convert to fraction form
    4,286.79/6,431.18 = 1,821.69/x
  3. Step 3: Cross multiply
    4,286.79x = 6,431.18 × 1,821.69
  4. Step 4: Simplify right side
    4,286.79x = 11,715,607.19
  5. Step 5: Solve for x
    x = 11,715,607.19/4,286.79
  6. Step 6: Final answer
    x = 2,732.96

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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.