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Finding the Fourth Proportional to 3,220.54, 4,445.42 and 1,962.41

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Solution

The fourth proportional to 3,220.54, 4,445.42 and 1,962.41 is: 2,708.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.54 : 4,445.42 = 1,962.41 : x
  2. Step 2: Convert to fraction form
    3,220.54/4,445.42 = 1,962.41/x
  3. Step 3: Cross multiply
    3,220.54x = 4,445.42 × 1,962.41
  4. Step 4: Simplify right side
    3,220.54x = 8,723,726.85
  5. Step 5: Solve for x
    x = 8,723,726.85/3,220.54
  6. Step 6: Final answer
    x = 2,708.78

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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.