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Finding the Fourth Proportional to 2,405.56, 3,608.88 and 2,163.64

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Solution

The fourth proportional to 2,405.56, 3,608.88 and 2,163.64 is: 3,245.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.56 : 3,608.88 = 2,163.64 : x
  2. Step 2: Convert to fraction form
    2,405.56/3,608.88 = 2,163.64/x
  3. Step 3: Cross multiply
    2,405.56x = 3,608.88 × 2,163.64
  4. Step 4: Simplify right side
    2,405.56x = 7,808,317.12
  5. Step 5: Solve for x
    x = 7,808,317.12/2,405.56
  6. Step 6: Final answer
    x = 3,245.95

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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.