Home / 1,928.20-2,661.12-1,142.44

Finding the Fourth Proportional to 1,928.20, 2,661.12 and 1,142.44

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Solution

The fourth proportional to 1,928.20, 2,661.12 and 1,142.44 is: 1,576.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.20 : 2,661.12 = 1,142.44 : x
  2. Step 2: Convert to fraction form
    1,928.20/2,661.12 = 1,142.44/x
  3. Step 3: Cross multiply
    1,928.20x = 2,661.12 × 1,142.44
  4. Step 4: Simplify right side
    1,928.20x = 3,040,169.93
  5. Step 5: Solve for x
    x = 3,040,169.93/1,928.20
  6. Step 6: Final answer
    x = 1,576.69

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1.5x scale

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.