Home / 2,589.84-3,886.44-1,129.08

Finding the Fourth Proportional to 2,589.84, 3,886.44 and 1,129.08

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Solution

The fourth proportional to 2,589.84, 3,886.44 and 1,129.08 is: 1,694.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.84 : 3,886.44 = 1,129.08 : x
  2. Step 2: Convert to fraction form
    2,589.84/3,886.44 = 1,129.08/x
  3. Step 3: Cross multiply
    2,589.84x = 3,886.44 × 1,129.08
  4. Step 4: Simplify right side
    2,589.84x = 4,388,101.68
  5. Step 5: Solve for x
    x = 4,388,101.68/2,589.84
  6. Step 6: Final answer
    x = 1,694.35

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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.