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Finding the Fourth Proportional to 8,728.05, 13,087.10 and 5,958.08

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Solution

The fourth proportional to 8,728.05, 13,087.10 and 5,958.08 is: 8,933.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.05 : 13,087.10 = 5,958.08 : x
  2. Step 2: Convert to fraction form
    8,728.05/13,087.10 = 5,958.08/x
  3. Step 3: Cross multiply
    8,728.05x = 13,087.10 × 5,958.08
  4. Step 4: Simplify right side
    8,728.05x = 77,973,893.54
  5. Step 5: Solve for x
    x = 77,973,893.54/8,728.05
  6. Step 6: Final answer
    x = 8,933.71

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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.