Home / 5,172.36-7,137.92-2,814.56

Finding the Fourth Proportional to 5,172.36, 7,137.92 and 2,814.56

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Solution

The fourth proportional to 5,172.36, 7,137.92 and 2,814.56 is: 3,884.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.36 : 7,137.92 = 2,814.56 : x
  2. Step 2: Convert to fraction form
    5,172.36/7,137.92 = 2,814.56/x
  3. Step 3: Cross multiply
    5,172.36x = 7,137.92 × 2,814.56
  4. Step 4: Simplify right side
    5,172.36x = 20,090,104.12
  5. Step 5: Solve for x
    x = 20,090,104.12/5,172.36
  6. Step 6: Final answer
    x = 3,884.13

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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.