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Finding the Fourth Proportional to 6,622.44, 9,139.22 and 3,790.32

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Solution

The fourth proportional to 6,622.44, 9,139.22 and 3,790.32 is: 5,230.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.44 : 9,139.22 = 3,790.32 : x
  2. Step 2: Convert to fraction form
    6,622.44/9,139.22 = 3,790.32/x
  3. Step 3: Cross multiply
    6,622.44x = 9,139.22 × 3,790.32
  4. Step 4: Simplify right side
    6,622.44x = 34,640,568.35
  5. Step 5: Solve for x
    x = 34,640,568.35/6,622.44
  6. Step 6: Final answer
    x = 5,230.79

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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.