Home / 2,291.12-3,161.73-1,296.41

Finding the Fourth Proportional to 2,291.12, 3,161.73 and 1,296.41

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Solution

The fourth proportional to 2,291.12, 3,161.73 and 1,296.41 is: 1,789.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.12 : 3,161.73 = 1,296.41 : x
  2. Step 2: Convert to fraction form
    2,291.12/3,161.73 = 1,296.41/x
  3. Step 3: Cross multiply
    2,291.12x = 3,161.73 × 1,296.41
  4. Step 4: Simplify right side
    2,291.12x = 4,098,887.44
  5. Step 5: Solve for x
    x = 4,098,887.44/2,291.12
  6. Step 6: Final answer
    x = 1,789.03

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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.