Home / 7,899.19-11,843.92-3,390.87

Finding the Fourth Proportional to 7,899.19, 11,843.92 and 3,390.87

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Solution

The fourth proportional to 7,899.19, 11,843.92 and 3,390.87 is: 5,084.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.19 : 11,843.92 = 3,390.87 : x
  2. Step 2: Convert to fraction form
    7,899.19/11,843.92 = 3,390.87/x
  3. Step 3: Cross multiply
    7,899.19x = 11,843.92 × 3,390.87
  4. Step 4: Simplify right side
    7,899.19x = 40,161,193.01
  5. Step 5: Solve for x
    x = 40,161,193.01/7,899.19
  6. Step 6: Final answer
    x = 5,084.22

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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.