Home / 5,129.11-7,694.96-1,431.34

Finding the Fourth Proportional to 5,129.11, 7,694.96 and 1,431.34

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Solution

The fourth proportional to 5,129.11, 7,694.96 and 1,431.34 is: 2,147.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.11 : 7,694.96 = 1,431.34 : x
  2. Step 2: Convert to fraction form
    5,129.11/7,694.96 = 1,431.34/x
  3. Step 3: Cross multiply
    5,129.11x = 7,694.96 × 1,431.34
  4. Step 4: Simplify right side
    5,129.11x = 11,014,104.05
  5. Step 5: Solve for x
    x = 11,014,104.05/5,129.11
  6. Step 6: Final answer
    x = 2,147.37

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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.