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Finding the Fourth Proportional to 2,287.99, 3,428.73 and 1,245.73

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Solution

The fourth proportional to 2,287.99, 3,428.73 and 1,245.73 is: 1,866.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.99 : 3,428.73 = 1,245.73 : x
  2. Step 2: Convert to fraction form
    2,287.99/3,428.73 = 1,245.73/x
  3. Step 3: Cross multiply
    2,287.99x = 3,428.73 × 1,245.73
  4. Step 4: Simplify right side
    2,287.99x = 4,271,271.82
  5. Step 5: Solve for x
    x = 4,271,271.82/2,287.99
  6. Step 6: Final answer
    x = 1,866.82

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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.