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Finding the Fourth Proportional to 1,806.03, 2,706.21 and 1,075.21

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Solution

The fourth proportional to 1,806.03, 2,706.21 and 1,075.21 is: 1,611.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.03 : 2,706.21 = 1,075.21 : x
  2. Step 2: Convert to fraction form
    1,806.03/2,706.21 = 1,075.21/x
  3. Step 3: Cross multiply
    1,806.03x = 2,706.21 × 1,075.21
  4. Step 4: Simplify right side
    1,806.03x = 2,909,737.29
  5. Step 5: Solve for x
    x = 2,909,737.29/1,806.03
  6. Step 6: Final answer
    x = 1,611.12

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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.