Home / 3,158.44-4,360-1,979.26

Finding the Fourth Proportional to 3,158.44, 4,360 and 1,979.26

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Solution

The fourth proportional to 3,158.44, 4,360 and 1,979.26 is: 2,732.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.44 : 4,360 = 1,979.26 : x
  2. Step 2: Convert to fraction form
    3,158.44/4,360 = 1,979.26/x
  3. Step 3: Cross multiply
    3,158.44x = 4,360 × 1,979.26
  4. Step 4: Simplify right side
    3,158.44x = 8,629,573.60
  5. Step 5: Solve for x
    x = 8,629,573.60/3,158.44
  6. Step 6: Final answer
    x = 2,732.23

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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.