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Finding the Fourth Proportional to 7,704.85, 10,623.01 and 6,287.09

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Solution

The fourth proportional to 7,704.85, 10,623.01 and 6,287.09 is: 8,668.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,704.85 : 10,623.01 = 6,287.09 : x
  2. Step 2: Convert to fraction form
    7,704.85/10,623.01 = 6,287.09/x
  3. Step 3: Cross multiply
    7,704.85x = 10,623.01 × 6,287.09
  4. Step 4: Simplify right side
    7,704.85x = 66,787,861.37
  5. Step 5: Solve for x
    x = 66,787,861.37/7,704.85
  6. Step 6: Final answer
    x = 8,668.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.