Home / 2,781.12-4,172.14-1,137.23

Finding the Fourth Proportional to 2,781.12, 4,172.14 and 1,137.23

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Solution

The fourth proportional to 2,781.12, 4,172.14 and 1,137.23 is: 1,706.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.12 : 4,172.14 = 1,137.23 : x
  2. Step 2: Convert to fraction form
    2,781.12/4,172.14 = 1,137.23/x
  3. Step 3: Cross multiply
    2,781.12x = 4,172.14 × 1,137.23
  4. Step 4: Simplify right side
    2,781.12x = 4,744,682.77
  5. Step 5: Solve for x
    x = 4,744,682.77/2,781.12
  6. Step 6: Final answer
    x = 1,706.03

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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.