Home / 3,899.62-5,383.48-2,721.88

Finding the Fourth Proportional to 3,899.62, 5,383.48 and 2,721.88

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Solution

The fourth proportional to 3,899.62, 5,383.48 and 2,721.88 is: 3,757.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.62 : 5,383.48 = 2,721.88 : x
  2. Step 2: Convert to fraction form
    3,899.62/5,383.48 = 2,721.88/x
  3. Step 3: Cross multiply
    3,899.62x = 5,383.48 × 2,721.88
  4. Step 4: Simplify right side
    3,899.62x = 14,653,159.63
  5. Step 5: Solve for x
    x = 14,653,159.63/3,899.62
  6. Step 6: Final answer
    x = 3,757.59

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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.