Home / 8,629.21-12,956.78-4,935.61

Finding the Fourth Proportional to 8,629.21, 12,956.78 and 4,935.61

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Solution

The fourth proportional to 8,629.21, 12,956.78 and 4,935.61 is: 7,410.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,629.21 : 12,956.78 = 4,935.61 : x
  2. Step 2: Convert to fraction form
    8,629.21/12,956.78 = 4,935.61/x
  3. Step 3: Cross multiply
    8,629.21x = 12,956.78 × 4,935.61
  4. Step 4: Simplify right side
    8,629.21x = 63,949,612.94
  5. Step 5: Solve for x
    x = 63,949,612.94/8,629.21
  6. Step 6: Final answer
    x = 7,410.83

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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.