Home / 2,125.82-3,189.94-1,152.60

Finding the Fourth Proportional to 2,125.82, 3,189.94 and 1,152.60

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Solution

The fourth proportional to 2,125.82, 3,189.94 and 1,152.60 is: 1,729.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.82 : 3,189.94 = 1,152.60 : x
  2. Step 2: Convert to fraction form
    2,125.82/3,189.94 = 1,152.60/x
  3. Step 3: Cross multiply
    2,125.82x = 3,189.94 × 1,152.60
  4. Step 4: Simplify right side
    2,125.82x = 3,676,724.84
  5. Step 5: Solve for x
    x = 3,676,724.84/2,125.82
  6. Step 6: Final answer
    x = 1,729.56

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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.