Home / 5,172.73-7,138.26-2,814.88

Finding the Fourth Proportional to 5,172.73, 7,138.26 and 2,814.88

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Solution

The fourth proportional to 5,172.73, 7,138.26 and 2,814.88 is: 3,884.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.73 : 7,138.26 = 2,814.88 : x
  2. Step 2: Convert to fraction form
    5,172.73/7,138.26 = 2,814.88/x
  3. Step 3: Cross multiply
    5,172.73x = 7,138.26 × 2,814.88
  4. Step 4: Simplify right side
    5,172.73x = 20,093,345.31
  5. Step 5: Solve for x
    x = 20,093,345.31/5,172.73
  6. Step 6: Final answer
    x = 3,884.48

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1.5x scale

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.