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Finding the Fourth Proportional to 1,518, 2,095.23 and 1,222.75

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Solution

The fourth proportional to 1,518, 2,095.23 and 1,222.75 is: 1,687.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518 : 2,095.23 = 1,222.75 : x
  2. Step 2: Convert to fraction form
    1,518/2,095.23 = 1,222.75/x
  3. Step 3: Cross multiply
    1,518x = 2,095.23 × 1,222.75
  4. Step 4: Simplify right side
    1,518x = 2,561,942.48
  5. Step 5: Solve for x
    x = 2,561,942.48/1,518
  6. Step 6: Final answer
    x = 1,687.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.