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Finding the Fourth Proportional to 7,960.55, 11,940.81 and 2,117.17

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Solution

The fourth proportional to 7,960.55, 11,940.81 and 2,117.17 is: 3,175.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,960.55 : 11,940.81 = 2,117.17 : x
  2. Step 2: Convert to fraction form
    7,960.55/11,940.81 = 2,117.17/x
  3. Step 3: Cross multiply
    7,960.55x = 11,940.81 × 2,117.17
  4. Step 4: Simplify right side
    7,960.55x = 25,280,665.00
  5. Step 5: Solve for x
    x = 25,280,665.00/7,960.55
  6. Step 6: Final answer
    x = 3,175.74

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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.