Home / 5,131.28-7,081.16-2,773.44

Finding the Fourth Proportional to 5,131.28, 7,081.16 and 2,773.44

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Solution

The fourth proportional to 5,131.28, 7,081.16 and 2,773.44 is: 3,827.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.28 : 7,081.16 = 2,773.44 : x
  2. Step 2: Convert to fraction form
    5,131.28/7,081.16 = 2,773.44/x
  3. Step 3: Cross multiply
    5,131.28x = 7,081.16 × 2,773.44
  4. Step 4: Simplify right side
    5,131.28x = 19,639,172.39
  5. Step 5: Solve for x
    x = 19,639,172.39/5,131.28
  6. Step 6: Final answer
    x = 3,827.34

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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.