Home / 2,291.23-3,161.91-1,296.60

Finding the Fourth Proportional to 2,291.23, 3,161.91 and 1,296.60

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Solution

The fourth proportional to 2,291.23, 3,161.91 and 1,296.60 is: 1,789.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.23 : 3,161.91 = 1,296.60 : x
  2. Step 2: Convert to fraction form
    2,291.23/3,161.91 = 1,296.60/x
  3. Step 3: Cross multiply
    2,291.23x = 3,161.91 × 1,296.60
  4. Step 4: Simplify right side
    2,291.23x = 4,099,732.51
  5. Step 5: Solve for x
    x = 4,099,732.51/2,291.23
  6. Step 6: Final answer
    x = 1,789.32

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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.