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Finding the Fourth Proportional to 6,630.92, 9,926.64 and 4,286.38

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Solution

The fourth proportional to 6,630.92, 9,926.64 and 4,286.38 is: 6,416.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,630.92 : 9,926.64 = 4,286.38 : x
  2. Step 2: Convert to fraction form
    6,630.92/9,926.64 = 4,286.38/x
  3. Step 3: Cross multiply
    6,630.92x = 9,926.64 × 4,286.38
  4. Step 4: Simplify right side
    6,630.92x = 42,549,351.16
  5. Step 5: Solve for x
    x = 42,549,351.16/6,630.92
  6. Step 6: Final answer
    x = 6,416.81

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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.