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Finding the Fourth Proportional to 6,791.99, 10,172.93 and 5,220.43

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Solution

The fourth proportional to 6,791.99, 10,172.93 and 5,220.43 is: 7,819.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,791.99 : 10,172.93 = 5,220.43 : x
  2. Step 2: Convert to fraction form
    6,791.99/10,172.93 = 5,220.43/x
  3. Step 3: Cross multiply
    6,791.99x = 10,172.93 × 5,220.43
  4. Step 4: Simplify right side
    6,791.99x = 53,107,056.58
  5. Step 5: Solve for x
    x = 53,107,056.58/6,791.99
  6. Step 6: Final answer
    x = 7,819.07

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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.