Home / 6,622.36-9,138.32-3,638.09

Finding the Fourth Proportional to 6,622.36, 9,138.32 and 3,638.09

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Solution

The fourth proportional to 6,622.36, 9,138.32 and 3,638.09 is: 5,020.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.36 : 9,138.32 = 3,638.09 : x
  2. Step 2: Convert to fraction form
    6,622.36/9,138.32 = 3,638.09/x
  3. Step 3: Cross multiply
    6,622.36x = 9,138.32 × 3,638.09
  4. Step 4: Simplify right side
    6,622.36x = 33,246,023.21
  5. Step 5: Solve for x
    x = 33,246,023.21/6,622.36
  6. Step 6: Final answer
    x = 5,020.27

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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.