Home / 3,450.25-5,172.20-1,257.42

Finding the Fourth Proportional to 3,450.25, 5,172.20 and 1,257.42

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Solution

The fourth proportional to 3,450.25, 5,172.20 and 1,257.42 is: 1,884.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,450.25 : 5,172.20 = 1,257.42 : x
  2. Step 2: Convert to fraction form
    3,450.25/5,172.20 = 1,257.42/x
  3. Step 3: Cross multiply
    3,450.25x = 5,172.20 × 1,257.42
  4. Step 4: Simplify right side
    3,450.25x = 6,503,652.62
  5. Step 5: Solve for x
    x = 6,503,652.62/3,450.25
  6. Step 6: Final answer
    x = 1,884.98

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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.