Home / 3,431.54-5,145.60-1,675.79

Finding the Fourth Proportional to 3,431.54, 5,145.60 and 1,675.79

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Solution

The fourth proportional to 3,431.54, 5,145.60 and 1,675.79 is: 2,512.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.54 : 5,145.60 = 1,675.79 : x
  2. Step 2: Convert to fraction form
    3,431.54/5,145.60 = 1,675.79/x
  3. Step 3: Cross multiply
    3,431.54x = 5,145.60 × 1,675.79
  4. Step 4: Simplify right side
    3,431.54x = 8,622,940.16
  5. Step 5: Solve for x
    x = 8,622,940.16/3,431.54
  6. Step 6: Final answer
    x = 2,512.85

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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.