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Finding the Fourth Proportional to 8,599.72, 12,899.10 and 3,406.12

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Solution

The fourth proportional to 8,599.72, 12,899.10 and 3,406.12 is: 5,108.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,599.72 : 12,899.10 = 3,406.12 : x
  2. Step 2: Convert to fraction form
    8,599.72/12,899.10 = 3,406.12/x
  3. Step 3: Cross multiply
    8,599.72x = 12,899.10 × 3,406.12
  4. Step 4: Simplify right side
    8,599.72x = 43,935,882.49
  5. Step 5: Solve for x
    x = 43,935,882.49/8,599.72
  6. Step 6: Final answer
    x = 5,108.99

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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.