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Finding the Fourth Proportional to 1,806.94, 2,491.84 and 1,098.90

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Solution

The fourth proportional to 1,806.94, 2,491.84 and 1,098.90 is: 1,515.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.94 : 2,491.84 = 1,098.90 : x
  2. Step 2: Convert to fraction form
    1,806.94/2,491.84 = 1,098.90/x
  3. Step 3: Cross multiply
    1,806.94x = 2,491.84 × 1,098.90
  4. Step 4: Simplify right side
    1,806.94x = 2,738,282.98
  5. Step 5: Solve for x
    x = 2,738,282.98/1,806.94
  6. Step 6: Final answer
    x = 1,515.43

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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.