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Finding the Fourth Proportional to 4,628.91, 6,942.83 and 1,855.47

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Solution

The fourth proportional to 4,628.91, 6,942.83 and 1,855.47 is: 2,782.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,628.91 : 6,942.83 = 1,855.47 : x
  2. Step 2: Convert to fraction form
    4,628.91/6,942.83 = 1,855.47/x
  3. Step 3: Cross multiply
    4,628.91x = 6,942.83 × 1,855.47
  4. Step 4: Simplify right side
    4,628.91x = 12,882,203.50
  5. Step 5: Solve for x
    x = 12,882,203.50/4,628.91
  6. Step 6: Final answer
    x = 2,782.99

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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.