Home / 2,291.47-3,162.29-1,296.70

Finding the Fourth Proportional to 2,291.47, 3,162.29 and 1,296.70

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Solution

The fourth proportional to 2,291.47, 3,162.29 and 1,296.70 is: 1,789.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.47 : 3,162.29 = 1,296.70 : x
  2. Step 2: Convert to fraction form
    2,291.47/3,162.29 = 1,296.70/x
  3. Step 3: Cross multiply
    2,291.47x = 3,162.29 × 1,296.70
  4. Step 4: Simplify right side
    2,291.47x = 4,100,527.05
  5. Step 5: Solve for x
    x = 4,100,527.05/2,291.47
  6. Step 6: Final answer
    x = 1,789.48

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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.