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Finding the Fourth Proportional to 7,861.04, 11,791.62 and 3,699.80

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Solution

The fourth proportional to 7,861.04, 11,791.62 and 3,699.80 is: 5,549.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,861.04 : 11,791.62 = 3,699.80 : x
  2. Step 2: Convert to fraction form
    7,861.04/11,791.62 = 3,699.80/x
  3. Step 3: Cross multiply
    7,861.04x = 11,791.62 × 3,699.80
  4. Step 4: Simplify right side
    7,861.04x = 43,626,635.68
  5. Step 5: Solve for x
    x = 43,626,635.68/7,861.04
  6. Step 6: Final answer
    x = 5,549.73

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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.