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Finding the Fourth Proportional to 8,410.99, 12,620.10 and 3,484.21

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Solution

The fourth proportional to 8,410.99, 12,620.10 and 3,484.21 is: 5,227.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,410.99 : 12,620.10 = 3,484.21 : x
  2. Step 2: Convert to fraction form
    8,410.99/12,620.10 = 3,484.21/x
  3. Step 3: Cross multiply
    8,410.99x = 12,620.10 × 3,484.21
  4. Step 4: Simplify right side
    8,410.99x = 43,971,078.62
  5. Step 5: Solve for x
    x = 43,971,078.62/8,410.99
  6. Step 6: Final answer
    x = 5,227.81

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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.