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Finding the Fourth Proportional to 8,072.56, 11,136.07 and 7,008.88

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Solution

The fourth proportional to 8,072.56, 11,136.07 and 7,008.88 is: 9,668.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,072.56 : 11,136.07 = 7,008.88 : x
  2. Step 2: Convert to fraction form
    8,072.56/11,136.07 = 7,008.88/x
  3. Step 3: Cross multiply
    8,072.56x = 11,136.07 × 7,008.88
  4. Step 4: Simplify right side
    8,072.56x = 78,051,287.58
  5. Step 5: Solve for x
    x = 78,051,287.58/8,072.56
  6. Step 6: Final answer
    x = 9,668.72

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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.