Home / 7,129.36-10,694.61-2,131.37

Finding the Fourth Proportional to 7,129.36, 10,694.61 and 2,131.37

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Solution

The fourth proportional to 7,129.36, 10,694.61 and 2,131.37 is: 3,197.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.36 : 10,694.61 = 2,131.37 : x
  2. Step 2: Convert to fraction form
    7,129.36/10,694.61 = 2,131.37/x
  3. Step 3: Cross multiply
    7,129.36x = 10,694.61 × 2,131.37
  4. Step 4: Simplify right side
    7,129.36x = 22,794,165.54
  5. Step 5: Solve for x
    x = 22,794,165.54/7,129.36
  6. Step 6: Final answer
    x = 3,197.22

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1.5x scale

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.