Home / 1,928.13-2,660.81-1,229.91

Finding the Fourth Proportional to 1,928.13, 2,660.81 and 1,229.91

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Solution

The fourth proportional to 1,928.13, 2,660.81 and 1,229.91 is: 1,697.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.13 : 2,660.81 = 1,229.91 : x
  2. Step 2: Convert to fraction form
    1,928.13/2,660.81 = 1,229.91/x
  3. Step 3: Cross multiply
    1,928.13x = 2,660.81 × 1,229.91
  4. Step 4: Simplify right side
    1,928.13x = 3,272,556.83
  5. Step 5: Solve for x
    x = 3,272,556.83/1,928.13
  6. Step 6: Final answer
    x = 1,697.27

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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.