Home / 6,622.36-9,138.96-3,789.72

Finding the Fourth Proportional to 6,622.36, 9,138.96 and 3,789.72

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Solution

The fourth proportional to 6,622.36, 9,138.96 and 3,789.72 is: 5,229.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.36 : 9,138.96 = 3,789.72 : x
  2. Step 2: Convert to fraction form
    6,622.36/9,138.96 = 3,789.72/x
  3. Step 3: Cross multiply
    6,622.36x = 9,138.96 × 3,789.72
  4. Step 4: Simplify right side
    6,622.36x = 34,634,099.49
  5. Step 5: Solve for x
    x = 34,634,099.49/6,622.36
  6. Step 6: Final answer
    x = 5,229.87

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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.