Home / 5,131.80-7,081.88-2,773.92

Finding the Fourth Proportional to 5,131.80, 7,081.88 and 2,773.92

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Solution

The fourth proportional to 5,131.80, 7,081.88 and 2,773.92 is: 3,828.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.80 : 7,081.88 = 2,773.92 : x
  2. Step 2: Convert to fraction form
    5,131.80/7,081.88 = 2,773.92/x
  3. Step 3: Cross multiply
    5,131.80x = 7,081.88 × 2,773.92
  4. Step 4: Simplify right side
    5,131.80x = 19,644,568.57
  5. Step 5: Solve for x
    x = 19,644,568.57/5,131.80
  6. Step 6: Final answer
    x = 3,828.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.