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Finding the Fourth Proportional to 3,968.64, 5,945.40 and 2,409.12

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Solution

The fourth proportional to 3,968.64, 5,945.40 and 2,409.12 is: 3,609.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.64 : 5,945.40 = 2,409.12 : x
  2. Step 2: Convert to fraction form
    3,968.64/5,945.40 = 2,409.12/x
  3. Step 3: Cross multiply
    3,968.64x = 5,945.40 × 2,409.12
  4. Step 4: Simplify right side
    3,968.64x = 14,323,182.05
  5. Step 5: Solve for x
    x = 14,323,182.05/3,968.64
  6. Step 6: Final answer
    x = 3,609.09

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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.