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Finding the Fourth Proportional to 8,440.88, 11,640.83 and 7,029.23

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Solution

The fourth proportional to 8,440.88, 11,640.83 and 7,029.23 is: 9,694.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,440.88 : 11,640.83 = 7,029.23 : x
  2. Step 2: Convert to fraction form
    8,440.88/11,640.83 = 7,029.23/x
  3. Step 3: Cross multiply
    8,440.88x = 11,640.83 × 7,029.23
  4. Step 4: Simplify right side
    8,440.88x = 81,825,978.11
  5. Step 5: Solve for x
    x = 81,825,978.11/8,440.88
  6. Step 6: Final answer
    x = 9,694.02

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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.