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Finding the Fourth Proportional to 3,482.55, 5,220.60 and 1,172.43

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Solution

The fourth proportional to 3,482.55, 5,220.60 and 1,172.43 is: 1,757.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,482.55 : 5,220.60 = 1,172.43 : x
  2. Step 2: Convert to fraction form
    3,482.55/5,220.60 = 1,172.43/x
  3. Step 3: Cross multiply
    3,482.55x = 5,220.60 × 1,172.43
  4. Step 4: Simplify right side
    3,482.55x = 6,120,788.06
  5. Step 5: Solve for x
    x = 6,120,788.06/3,482.55
  6. Step 6: Final answer
    x = 1,757.56

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.