Home / 8,629.50-12,942.96-2,785.32

Finding the Fourth Proportional to 8,629.50, 12,942.96 and 2,785.32

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Solution

The fourth proportional to 8,629.50, 12,942.96 and 2,785.32 is: 4,177.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,629.50 : 12,942.96 = 2,785.32 : x
  2. Step 2: Convert to fraction form
    8,629.50/12,942.96 = 2,785.32/x
  3. Step 3: Cross multiply
    8,629.50x = 12,942.96 × 2,785.32
  4. Step 4: Simplify right side
    8,629.50x = 36,050,285.35
  5. Step 5: Solve for x
    x = 36,050,285.35/8,629.50
  6. Step 6: Final answer
    x = 4,177.56

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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.