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Finding the Fourth Proportional to 2,757.87, 4,136.78 and 1,114.39

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Solution

The fourth proportional to 2,757.87, 4,136.78 and 1,114.39 is: 1,671.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.87 : 4,136.78 = 1,114.39 : x
  2. Step 2: Convert to fraction form
    2,757.87/4,136.78 = 1,114.39/x
  3. Step 3: Cross multiply
    2,757.87x = 4,136.78 × 1,114.39
  4. Step 4: Simplify right side
    2,757.87x = 4,609,986.26
  5. Step 5: Solve for x
    x = 4,609,986.26/2,757.87
  6. Step 6: Final answer
    x = 1,671.57

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1.5x scale

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.