Home / 4,279.91-6,418.89-1,938.37

Finding the Fourth Proportional to 4,279.91, 6,418.89 and 1,938.37

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Solution

The fourth proportional to 4,279.91, 6,418.89 and 1,938.37 is: 2,907.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.91 : 6,418.89 = 1,938.37 : x
  2. Step 2: Convert to fraction form
    4,279.91/6,418.89 = 1,938.37/x
  3. Step 3: Cross multiply
    4,279.91x = 6,418.89 × 1,938.37
  4. Step 4: Simplify right side
    4,279.91x = 12,442,183.81
  5. Step 5: Solve for x
    x = 12,442,183.81/4,279.91
  6. Step 6: Final answer
    x = 2,907.11

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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.