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Finding the Fourth Proportional to 3,257.28, 4,879.78 and 1,938.26

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Solution

The fourth proportional to 3,257.28, 4,879.78 and 1,938.26 is: 2,903.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,257.28 : 4,879.78 = 1,938.26 : x
  2. Step 2: Convert to fraction form
    3,257.28/4,879.78 = 1,938.26/x
  3. Step 3: Cross multiply
    3,257.28x = 4,879.78 × 1,938.26
  4. Step 4: Simplify right side
    3,257.28x = 9,458,289.74
  5. Step 5: Solve for x
    x = 9,458,289.74/3,257.28
  6. Step 6: Final answer
    x = 2,903.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.