Home / 3,450.40-5,172.76-1,257.73

Finding the Fourth Proportional to 3,450.40, 5,172.76 and 1,257.73

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Solution

The fourth proportional to 3,450.40, 5,172.76 and 1,257.73 is: 1,885.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,450.40 : 5,172.76 = 1,257.73 : x
  2. Step 2: Convert to fraction form
    3,450.40/5,172.76 = 1,257.73/x
  3. Step 3: Cross multiply
    3,450.40x = 5,172.76 × 1,257.73
  4. Step 4: Simplify right side
    3,450.40x = 6,505,924.08
  5. Step 5: Solve for x
    x = 6,505,924.08/3,450.40
  6. Step 6: Final answer
    x = 1,885.56

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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.