Home / 2,213.40-3,315.85-1,236.54

Finding the Fourth Proportional to 2,213.40, 3,315.85 and 1,236.54

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Solution

The fourth proportional to 2,213.40, 3,315.85 and 1,236.54 is: 1,852.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.40 : 3,315.85 = 1,236.54 : x
  2. Step 2: Convert to fraction form
    2,213.40/3,315.85 = 1,236.54/x
  3. Step 3: Cross multiply
    2,213.40x = 3,315.85 × 1,236.54
  4. Step 4: Simplify right side
    2,213.40x = 4,100,178.07
  5. Step 5: Solve for x
    x = 4,100,178.07/2,213.40
  6. Step 6: Final answer
    x = 1,852.43

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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.