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Finding the Fourth Proportional to 8,668.42, 12,997.16 and 3,668.20

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Solution

The fourth proportional to 8,668.42, 12,997.16 and 3,668.20 is: 5,499.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.42 : 12,997.16 = 3,668.20 : x
  2. Step 2: Convert to fraction form
    8,668.42/12,997.16 = 3,668.20/x
  3. Step 3: Cross multiply
    8,668.42x = 12,997.16 × 3,668.20
  4. Step 4: Simplify right side
    8,668.42x = 47,676,182.31
  5. Step 5: Solve for x
    x = 47,676,182.31/8,668.42
  6. Step 6: Final answer
    x = 5,499.99

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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.