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Finding the Fourth Proportional to 6,626.72, 9,942.36 and 4,158.68

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Solution

The fourth proportional to 6,626.72, 9,942.36 and 4,158.68 is: 6,239.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,626.72 : 9,942.36 = 4,158.68 : x
  2. Step 2: Convert to fraction form
    6,626.72/9,942.36 = 4,158.68/x
  3. Step 3: Cross multiply
    6,626.72x = 9,942.36 × 4,158.68
  4. Step 4: Simplify right side
    6,626.72x = 41,347,093.68
  5. Step 5: Solve for x
    x = 41,347,093.68/6,626.72
  6. Step 6: Final answer
    x = 6,239.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.