Home / 6,622.32-9,138.76-3,638.09

Finding the Fourth Proportional to 6,622.32, 9,138.76 and 3,638.09

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Solution

The fourth proportional to 6,622.32, 9,138.76 and 3,638.09 is: 5,020.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.32 : 9,138.76 = 3,638.09 : x
  2. Step 2: Convert to fraction form
    6,622.32/9,138.76 = 3,638.09/x
  3. Step 3: Cross multiply
    6,622.32x = 9,138.76 × 3,638.09
  4. Step 4: Simplify right side
    6,622.32x = 33,247,640.46
  5. Step 5: Solve for x
    x = 33,247,640.46/6,622.32
  6. Step 6: Final answer
    x = 5,020.54

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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.