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Finding the Fourth Proportional to 8,969.44, 12,352.12 and 8,940.24

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Solution

The fourth proportional to 8,969.44, 12,352.12 and 8,940.24 is: 12,311.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,969.44 : 12,352.12 = 8,940.24 : x
  2. Step 2: Convert to fraction form
    8,969.44/12,352.12 = 8,940.24/x
  3. Step 3: Cross multiply
    8,969.44x = 12,352.12 × 8,940.24
  4. Step 4: Simplify right side
    8,969.44x = 110,430,917.31
  5. Step 5: Solve for x
    x = 110,430,917.31/8,969.44
  6. Step 6: Final answer
    x = 12,311.91

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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.