Home / 2,129.62-3,196.25-1,629.45

Finding the Fourth Proportional to 2,129.62, 3,196.25 and 1,629.45

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Solution

The fourth proportional to 2,129.62, 3,196.25 and 1,629.45 is: 2,445.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.62 : 3,196.25 = 1,629.45 : x
  2. Step 2: Convert to fraction form
    2,129.62/3,196.25 = 1,629.45/x
  3. Step 3: Cross multiply
    2,129.62x = 3,196.25 × 1,629.45
  4. Step 4: Simplify right side
    2,129.62x = 5,208,129.56
  5. Step 5: Solve for x
    x = 5,208,129.56/2,129.62
  6. Step 6: Final answer
    x = 2,445.57

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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.