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Finding the Fourth Proportional to 8,620.84, 12,933.29 and 2,777.24

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Solution

The fourth proportional to 8,620.84, 12,933.29 and 2,777.24 is: 4,166.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.84 : 12,933.29 = 2,777.24 : x
  2. Step 2: Convert to fraction form
    8,620.84/12,933.29 = 2,777.24/x
  3. Step 3: Cross multiply
    8,620.84x = 12,933.29 × 2,777.24
  4. Step 4: Simplify right side
    8,620.84x = 35,918,850.32
  5. Step 5: Solve for x
    x = 35,918,850.32/8,620.84
  6. Step 6: Final answer
    x = 4,166.51

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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.