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Finding the Fourth Proportional to 5,740, 8,611.56 and 1,636

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Solution

The fourth proportional to 5,740, 8,611.56 and 1,636 is: 2,454.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,740 : 8,611.56 = 1,636 : x
  2. Step 2: Convert to fraction form
    5,740/8,611.56 = 1,636/x
  3. Step 3: Cross multiply
    5,740x = 8,611.56 × 1,636
  4. Step 4: Simplify right side
    5,740x = 14,088,512.16
  5. Step 5: Solve for x
    x = 14,088,512.16/5,740
  6. Step 6: Final answer
    x = 2,454.44

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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.