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Finding the Fourth Proportional to 3,896.80, 5,845.20 and 2,341.60

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Solution

The fourth proportional to 3,896.80, 5,845.20 and 2,341.60 is: 3,512.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.80 : 5,845.20 = 2,341.60 : x
  2. Step 2: Convert to fraction form
    3,896.80/5,845.20 = 2,341.60/x
  3. Step 3: Cross multiply
    3,896.80x = 5,845.20 × 2,341.60
  4. Step 4: Simplify right side
    3,896.80x = 13,687,120.32
  5. Step 5: Solve for x
    x = 13,687,120.32/3,896.80
  6. Step 6: Final answer
    x = 3,512.40

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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.