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Finding the Fourth Proportional to 6,668.42, 9,191.79 and 5,249.86

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Solution

The fourth proportional to 6,668.42, 9,191.79 and 5,249.86 is: 7,236.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,668.42 : 9,191.79 = 5,249.86 : x
  2. Step 2: Convert to fraction form
    6,668.42/9,191.79 = 5,249.86/x
  3. Step 3: Cross multiply
    6,668.42x = 9,191.79 × 5,249.86
  4. Step 4: Simplify right side
    6,668.42x = 48,255,572.90
  5. Step 5: Solve for x
    x = 48,255,572.90/6,668.42
  6. Step 6: Final answer
    x = 7,236.43

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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.