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Finding the Fourth Proportional to 7,955.67, 11,935.02 and 3,212.21

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Solution

The fourth proportional to 7,955.67, 11,935.02 and 3,212.21 is: 4,818.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.67 : 11,935.02 = 3,212.21 : x
  2. Step 2: Convert to fraction form
    7,955.67/11,935.02 = 3,212.21/x
  3. Step 3: Cross multiply
    7,955.67x = 11,935.02 × 3,212.21
  4. Step 4: Simplify right side
    7,955.67x = 38,337,730.92
  5. Step 5: Solve for x
    x = 38,337,730.92/7,955.67
  6. Step 6: Final answer
    x = 4,818.92

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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.