Home / 3,912.40-5,398.20-2,232.89

Finding the Fourth Proportional to 3,912.40, 5,398.20 and 2,232.89

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Solution

The fourth proportional to 3,912.40, 5,398.20 and 2,232.89 is: 3,080.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.40 : 5,398.20 = 2,232.89 : x
  2. Step 2: Convert to fraction form
    3,912.40/5,398.20 = 2,232.89/x
  3. Step 3: Cross multiply
    3,912.40x = 5,398.20 × 2,232.89
  4. Step 4: Simplify right side
    3,912.40x = 12,053,580.05
  5. Step 5: Solve for x
    x = 12,053,580.05/3,912.40
  6. Step 6: Final answer
    x = 3,080.86

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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.