Home / 5,129.43-7,694.01-1,431.55

Finding the Fourth Proportional to 5,129.43, 7,694.01 and 1,431.55

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Solution

The fourth proportional to 5,129.43, 7,694.01 and 1,431.55 is: 2,147.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.43 : 7,694.01 = 1,431.55 : x
  2. Step 2: Convert to fraction form
    5,129.43/7,694.01 = 1,431.55/x
  3. Step 3: Cross multiply
    5,129.43x = 7,694.01 × 1,431.55
  4. Step 4: Simplify right side
    5,129.43x = 11,014,360.02
  5. Step 5: Solve for x
    x = 11,014,360.02/5,129.43
  6. Step 6: Final answer
    x = 2,147.29

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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.