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Finding the Fourth Proportional to 6,622.94, 9,143.94 and 4,107.72

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Solution

The fourth proportional to 6,622.94, 9,143.94 and 4,107.72 is: 5,671.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.94 : 9,143.94 = 4,107.72 : x
  2. Step 2: Convert to fraction form
    6,622.94/9,143.94 = 4,107.72/x
  3. Step 3: Cross multiply
    6,622.94x = 9,143.94 × 4,107.72
  4. Step 4: Simplify right side
    6,622.94x = 37,560,745.22
  5. Step 5: Solve for x
    x = 37,560,745.22/6,622.94
  6. Step 6: Final answer
    x = 5,671.31

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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.