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Finding the Fourth Proportional to 8,338.05, 12,507.08 and 3,406.59

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Solution

The fourth proportional to 8,338.05, 12,507.08 and 3,406.59 is: 5,109.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,338.05 : 12,507.08 = 3,406.59 : x
  2. Step 2: Convert to fraction form
    8,338.05/12,507.08 = 3,406.59/x
  3. Step 3: Cross multiply
    8,338.05x = 12,507.08 × 3,406.59
  4. Step 4: Simplify right side
    8,338.05x = 42,606,476.62
  5. Step 5: Solve for x
    x = 42,606,476.62/8,338.05
  6. Step 6: Final answer
    x = 5,109.89

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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.