Home / 4,257.38-6,389.94-2,178.82

Finding the Fourth Proportional to 4,257.38, 6,389.94 and 2,178.82

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Solution

The fourth proportional to 4,257.38, 6,389.94 and 2,178.82 is: 3,270.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,257.38 : 6,389.94 = 2,178.82 : x
  2. Step 2: Convert to fraction form
    4,257.38/6,389.94 = 2,178.82/x
  3. Step 3: Cross multiply
    4,257.38x = 6,389.94 × 2,178.82
  4. Step 4: Simplify right side
    4,257.38x = 13,922,497.03
  5. Step 5: Solve for x
    x = 13,922,497.03/4,257.38
  6. Step 6: Final answer
    x = 3,270.21

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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.