Home / 2,230.80-3,351.68-1,257.60

Finding the Fourth Proportional to 2,230.80, 3,351.68 and 1,257.60

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Solution

The fourth proportional to 2,230.80, 3,351.68 and 1,257.60 is: 1,889.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.80 : 3,351.68 = 1,257.60 : x
  2. Step 2: Convert to fraction form
    2,230.80/3,351.68 = 1,257.60/x
  3. Step 3: Cross multiply
    2,230.80x = 3,351.68 × 1,257.60
  4. Step 4: Simplify right side
    2,230.80x = 4,215,072.77
  5. Step 5: Solve for x
    x = 4,215,072.77/2,230.80
  6. Step 6: Final answer
    x = 1,889.49

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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.