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Finding the Fourth Proportional to 8,322.22, 11,499.87 and 7,917.26

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Solution

The fourth proportional to 8,322.22, 11,499.87 and 7,917.26 is: 10,940.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,322.22 : 11,499.87 = 7,917.26 : x
  2. Step 2: Convert to fraction form
    8,322.22/11,499.87 = 7,917.26/x
  3. Step 3: Cross multiply
    8,322.22x = 11,499.87 × 7,917.26
  4. Step 4: Simplify right side
    8,322.22x = 91,047,460.76
  5. Step 5: Solve for x
    x = 91,047,460.76/8,322.22
  6. Step 6: Final answer
    x = 10,940.29

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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.