Home / 4,286.75-6,432.55-1,821.31

Finding the Fourth Proportional to 4,286.75, 6,432.55 and 1,821.31

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Solution

The fourth proportional to 4,286.75, 6,432.55 and 1,821.31 is: 2,732.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,286.75 : 6,432.55 = 1,821.31 : x
  2. Step 2: Convert to fraction form
    4,286.75/6,432.55 = 1,821.31/x
  3. Step 3: Cross multiply
    4,286.75x = 6,432.55 × 1,821.31
  4. Step 4: Simplify right side
    4,286.75x = 11,715,647.01
  5. Step 5: Solve for x
    x = 11,715,647.01/4,286.75
  6. Step 6: Final answer
    x = 2,732.99

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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.