Home / 6,622.10-9,138.48-3,638

Finding the Fourth Proportional to 6,622.10, 9,138.48 and 3,638

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Solution

The fourth proportional to 6,622.10, 9,138.48 and 3,638 is: 5,020.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.10 : 9,138.48 = 3,638 : x
  2. Step 2: Convert to fraction form
    6,622.10/9,138.48 = 3,638/x
  3. Step 3: Cross multiply
    6,622.10x = 9,138.48 × 3,638
  4. Step 4: Simplify right side
    6,622.10x = 33,245,790.24
  5. Step 5: Solve for x
    x = 33,245,790.24/6,622.10
  6. Step 6: Final answer
    x = 5,020.43

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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.