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Finding the Fourth Proportional to 8,629.29, 12,947.04 and 4,249.81

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Solution

The fourth proportional to 8,629.29, 12,947.04 and 4,249.81 is: 6,376.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,629.29 : 12,947.04 = 4,249.81 : x
  2. Step 2: Convert to fraction form
    8,629.29/12,947.04 = 4,249.81/x
  3. Step 3: Cross multiply
    8,629.29x = 12,947.04 × 4,249.81
  4. Step 4: Simplify right side
    8,629.29x = 55,022,460.06
  5. Step 5: Solve for x
    x = 55,022,460.06/8,629.29
  6. Step 6: Final answer
    x = 6,376.24

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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.