Home / 3,712.88-5,124.84-2,221.28

Finding the Fourth Proportional to 3,712.88, 5,124.84 and 2,221.28

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Solution

The fourth proportional to 3,712.88, 5,124.84 and 2,221.28 is: 3,066.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.88 : 5,124.84 = 2,221.28 : x
  2. Step 2: Convert to fraction form
    3,712.88/5,124.84 = 2,221.28/x
  3. Step 3: Cross multiply
    3,712.88x = 5,124.84 × 2,221.28
  4. Step 4: Simplify right side
    3,712.88x = 11,383,704.60
  5. Step 5: Solve for x
    x = 11,383,704.60/3,712.88
  6. Step 6: Final answer
    x = 3,066.00

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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.