Home / 2,291.60-3,162.16-1,296.80

Finding the Fourth Proportional to 2,291.60, 3,162.16 and 1,296.80

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Solution

The fourth proportional to 2,291.60, 3,162.16 and 1,296.80 is: 1,789.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.60 : 3,162.16 = 1,296.80 : x
  2. Step 2: Convert to fraction form
    2,291.60/3,162.16 = 1,296.80/x
  3. Step 3: Cross multiply
    2,291.60x = 3,162.16 × 1,296.80
  4. Step 4: Simplify right side
    2,291.60x = 4,100,689.09
  5. Step 5: Solve for x
    x = 4,100,689.09/2,291.60
  6. Step 6: Final answer
    x = 1,789.44

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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.