Home / 2,291.81-3,162.68-1,297.09

Finding the Fourth Proportional to 2,291.81, 3,162.68 and 1,297.09

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Solution

The fourth proportional to 2,291.81, 3,162.68 and 1,297.09 is: 1,789.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.81 : 3,162.68 = 1,297.09 : x
  2. Step 2: Convert to fraction form
    2,291.81/3,162.68 = 1,297.09/x
  3. Step 3: Cross multiply
    2,291.81x = 3,162.68 × 1,297.09
  4. Step 4: Simplify right side
    2,291.81x = 4,102,280.60
  5. Step 5: Solve for x
    x = 4,102,280.60/2,291.81
  6. Step 6: Final answer
    x = 1,789.97

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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.