Home / 5,381.80-8,072.70-2,757.40

Finding the Fourth Proportional to 5,381.80, 8,072.70 and 2,757.40

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Solution

The fourth proportional to 5,381.80, 8,072.70 and 2,757.40 is: 4,136.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.80 : 8,072.70 = 2,757.40 : x
  2. Step 2: Convert to fraction form
    5,381.80/8,072.70 = 2,757.40/x
  3. Step 3: Cross multiply
    5,381.80x = 8,072.70 × 2,757.40
  4. Step 4: Simplify right side
    5,381.80x = 22,259,662.98
  5. Step 5: Solve for x
    x = 22,259,662.98/5,381.80
  6. Step 6: Final answer
    x = 4,136.10

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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.