Home / 2,226.30-3,072.20-1,231.56

Finding the Fourth Proportional to 2,226.30, 3,072.20 and 1,231.56

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Solution

The fourth proportional to 2,226.30, 3,072.20 and 1,231.56 is: 1,699.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,226.30 : 3,072.20 = 1,231.56 : x
  2. Step 2: Convert to fraction form
    2,226.30/3,072.20 = 1,231.56/x
  3. Step 3: Cross multiply
    2,226.30x = 3,072.20 × 1,231.56
  4. Step 4: Simplify right side
    2,226.30x = 3,783,598.63
  5. Step 5: Solve for x
    x = 3,783,598.63/2,226.30
  6. Step 6: Final answer
    x = 1,699.50

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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.