Home / 1,789.70-2,687.58-1,097.75

Finding the Fourth Proportional to 1,789.70, 2,687.58 and 1,097.75

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Solution

The fourth proportional to 1,789.70, 2,687.58 and 1,097.75 is: 1,648.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.70 : 2,687.58 = 1,097.75 : x
  2. Step 2: Convert to fraction form
    1,789.70/2,687.58 = 1,097.75/x
  3. Step 3: Cross multiply
    1,789.70x = 2,687.58 × 1,097.75
  4. Step 4: Simplify right side
    1,789.70x = 2,950,297.66
  5. Step 5: Solve for x
    x = 2,950,297.66/1,789.70
  6. Step 6: Final answer
    x = 1,648.49

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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.