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Finding the Fourth Proportional to 7,772.97, 11,661.74 and 2,507.88

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Solution

The fourth proportional to 7,772.97, 11,661.74 and 2,507.88 is: 3,762.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.97 : 11,661.74 = 2,507.88 : x
  2. Step 2: Convert to fraction form
    7,772.97/11,661.74 = 2,507.88/x
  3. Step 3: Cross multiply
    7,772.97x = 11,661.74 × 2,507.88
  4. Step 4: Simplify right side
    7,772.97x = 29,246,244.51
  5. Step 5: Solve for x
    x = 29,246,244.51/7,772.97
  6. Step 6: Final answer
    x = 3,762.56

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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.