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Finding the Fourth Proportional to 8,682.78, 13,024.13 and 3,136.12

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Solution

The fourth proportional to 8,682.78, 13,024.13 and 3,136.12 is: 4,704.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.78 : 13,024.13 = 3,136.12 : x
  2. Step 2: Convert to fraction form
    8,682.78/13,024.13 = 3,136.12/x
  3. Step 3: Cross multiply
    8,682.78x = 13,024.13 × 3,136.12
  4. Step 4: Simplify right side
    8,682.78x = 40,845,234.58
  5. Step 5: Solve for x
    x = 40,845,234.58/8,682.78
  6. Step 6: Final answer
    x = 4,704.17

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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.