Home / 6,622.20-9,138.60-3,638.04

Finding the Fourth Proportional to 6,622.20, 9,138.60 and 3,638.04

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Solution

The fourth proportional to 6,622.20, 9,138.60 and 3,638.04 is: 5,020.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.20 : 9,138.60 = 3,638.04 : x
  2. Step 2: Convert to fraction form
    6,622.20/9,138.60 = 3,638.04/x
  3. Step 3: Cross multiply
    6,622.20x = 9,138.60 × 3,638.04
  4. Step 4: Simplify right side
    6,622.20x = 33,246,592.34
  5. Step 5: Solve for x
    x = 33,246,592.34/6,622.20
  6. Step 6: Final answer
    x = 5,020.48

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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.