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Finding the Fourth Proportional to 3,635.60, 5,440.80 and 2,175.80

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Solution

The fourth proportional to 3,635.60, 5,440.80 and 2,175.80 is: 3,256.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,635.60 : 5,440.80 = 2,175.80 : x
  2. Step 2: Convert to fraction form
    3,635.60/5,440.80 = 2,175.80/x
  3. Step 3: Cross multiply
    3,635.60x = 5,440.80 × 2,175.80
  4. Step 4: Simplify right side
    3,635.60x = 11,838,092.64
  5. Step 5: Solve for x
    x = 11,838,092.64/3,635.60
  6. Step 6: Final answer
    x = 3,256.16

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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.