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Finding the Fourth Proportional to 7,140.45, 10,704.53 and 2,760.99

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Solution

The fourth proportional to 7,140.45, 10,704.53 and 2,760.99 is: 4,139.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.45 : 10,704.53 = 2,760.99 : x
  2. Step 2: Convert to fraction form
    7,140.45/10,704.53 = 2,760.99/x
  3. Step 3: Cross multiply
    7,140.45x = 10,704.53 × 2,760.99
  4. Step 4: Simplify right side
    7,140.45x = 29,555,100.28
  5. Step 5: Solve for x
    x = 29,555,100.28/7,140.45
  6. Step 6: Final answer
    x = 4,139.11

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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.