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Finding the Fourth Proportional to 6,668.76, 9,197.64 and 6,221.64

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Solution

The fourth proportional to 6,668.76, 9,197.64 and 6,221.64 is: 8,580.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,668.76 : 9,197.64 = 6,221.64 : x
  2. Step 2: Convert to fraction form
    6,668.76/9,197.64 = 6,221.64/x
  3. Step 3: Cross multiply
    6,668.76x = 9,197.64 × 6,221.64
  4. Step 4: Simplify right side
    6,668.76x = 57,224,404.93
  5. Step 5: Solve for x
    x = 57,224,404.93/6,668.76
  6. Step 6: Final answer
    x = 8,580.97

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Half scale
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Double scale
Find fourth proportional to 6,669.76, 9,199.02 and 6,222.64
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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.