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Finding the Fourth Proportional to 3,719.60, 5,568.60 and 3,611.60

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Solution

The fourth proportional to 3,719.60, 5,568.60 and 3,611.60 is: 5,406.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.60 : 5,568.60 = 3,611.60 : x
  2. Step 2: Convert to fraction form
    3,719.60/5,568.60 = 3,611.60/x
  3. Step 3: Cross multiply
    3,719.60x = 5,568.60 × 3,611.60
  4. Step 4: Simplify right side
    3,719.60x = 20,111,555.76
  5. Step 5: Solve for x
    x = 20,111,555.76/3,719.60
  6. Step 6: Final answer
    x = 5,406.91

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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.