Home / 1,928.56-2,660.66-1,181.92

Finding the Fourth Proportional to 1,928.56, 2,660.66 and 1,181.92

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Solution

The fourth proportional to 1,928.56, 2,660.66 and 1,181.92 is: 1,630.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.56 : 2,660.66 = 1,181.92 : x
  2. Step 2: Convert to fraction form
    1,928.56/2,660.66 = 1,181.92/x
  3. Step 3: Cross multiply
    1,928.56x = 2,660.66 × 1,181.92
  4. Step 4: Simplify right side
    1,928.56x = 3,144,687.27
  5. Step 5: Solve for x
    x = 3,144,687.27/1,928.56
  6. Step 6: Final answer
    x = 1,630.59

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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.