Home / 2,291.79-3,162.41-1,297.07

Finding the Fourth Proportional to 2,291.79, 3,162.41 and 1,297.07

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Solution

The fourth proportional to 2,291.79, 3,162.41 and 1,297.07 is: 1,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.79 : 3,162.41 = 1,297.07 : x
  2. Step 2: Convert to fraction form
    2,291.79/3,162.41 = 1,297.07/x
  3. Step 3: Cross multiply
    2,291.79x = 3,162.41 × 1,297.07
  4. Step 4: Simplify right side
    2,291.79x = 4,101,844.84
  5. Step 5: Solve for x
    x = 4,101,844.84/2,291.79
  6. Step 6: Final answer
    x = 1,789.80

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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.