Home / 2,789.30-4,175.82-2,089.62

Finding the Fourth Proportional to 2,789.30, 4,175.82 and 2,089.62

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Solution

The fourth proportional to 2,789.30, 4,175.82 and 2,089.62 is: 3,128.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.30 : 4,175.82 = 2,089.62 : x
  2. Step 2: Convert to fraction form
    2,789.30/4,175.82 = 2,089.62/x
  3. Step 3: Cross multiply
    2,789.30x = 4,175.82 × 2,089.62
  4. Step 4: Simplify right side
    2,789.30x = 8,725,876.99
  5. Step 5: Solve for x
    x = 8,725,876.99/2,789.30
  6. Step 6: Final answer
    x = 3,128.34

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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.