Home / 2,226.40-3,072.41-1,231.67

Finding the Fourth Proportional to 2,226.40, 3,072.41 and 1,231.67

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Solution

The fourth proportional to 2,226.40, 3,072.41 and 1,231.67 is: 1,699.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,226.40 : 3,072.41 = 1,231.67 : x
  2. Step 2: Convert to fraction form
    2,226.40/3,072.41 = 1,231.67/x
  3. Step 3: Cross multiply
    2,226.40x = 3,072.41 × 1,231.67
  4. Step 4: Simplify right side
    2,226.40x = 3,784,195.22
  5. Step 5: Solve for x
    x = 3,784,195.22/2,226.40
  6. Step 6: Final answer
    x = 1,699.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.