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Finding the Fourth Proportional to 7,969.77, 11,954.66 and 2,772

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Solution

The fourth proportional to 7,969.77, 11,954.66 and 2,772 is: 4,158

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,969.77 : 11,954.66 = 2,772 : x
  2. Step 2: Convert to fraction form
    7,969.77/11,954.66 = 2,772/x
  3. Step 3: Cross multiply
    7,969.77x = 11,954.66 × 2,772
  4. Step 4: Simplify right side
    7,969.77x = 33,138,303.66
  5. Step 5: Solve for x
    x = 33,138,303.66/7,969.77
  6. Step 6: Final answer
    x = 4,158

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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.