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Finding the Fourth Proportional to 7,799.77, 11,699.79 and 2,866.78

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Solution

The fourth proportional to 7,799.77, 11,699.79 and 2,866.78 is: 4,300.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,799.77 : 11,699.79 = 2,866.78 : x
  2. Step 2: Convert to fraction form
    7,799.77/11,699.79 = 2,866.78/x
  3. Step 3: Cross multiply
    7,799.77x = 11,699.79 × 2,866.78
  4. Step 4: Simplify right side
    7,799.77x = 33,540,723.98
  5. Step 5: Solve for x
    x = 33,540,723.98/7,799.77
  6. Step 6: Final answer
    x = 4,300.22

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1.5x scale

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.