Home / 2,589.49-3,885.11-1,129.60

Finding the Fourth Proportional to 2,589.49, 3,885.11 and 1,129.60

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Solution

The fourth proportional to 2,589.49, 3,885.11 and 1,129.60 is: 1,694.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.49 : 3,885.11 = 1,129.60 : x
  2. Step 2: Convert to fraction form
    2,589.49/3,885.11 = 1,129.60/x
  3. Step 3: Cross multiply
    2,589.49x = 3,885.11 × 1,129.60
  4. Step 4: Simplify right side
    2,589.49x = 4,388,620.26
  5. Step 5: Solve for x
    x = 4,388,620.26/2,589.49
  6. Step 6: Final answer
    x = 1,694.78

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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.