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Finding the Fourth Proportional to 1,549, 2,137.62 and 850.39

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Solution

The fourth proportional to 1,549, 2,137.62 and 850.39 is: 1,173.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549 : 2,137.62 = 850.39 : x
  2. Step 2: Convert to fraction form
    1,549/2,137.62 = 850.39/x
  3. Step 3: Cross multiply
    1,549x = 2,137.62 × 850.39
  4. Step 4: Simplify right side
    1,549x = 1,817,810.67
  5. Step 5: Solve for x
    x = 1,817,810.67/1,549
  6. Step 6: Final answer
    x = 1,173.54

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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.