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Finding the Fourth Proportional to 2,605.50, 3,907.67 and 756.14

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Solution

The fourth proportional to 2,605.50, 3,907.67 and 756.14 is: 1,134.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.50 : 3,907.67 = 756.14 : x
  2. Step 2: Convert to fraction form
    2,605.50/3,907.67 = 756.14/x
  3. Step 3: Cross multiply
    2,605.50x = 3,907.67 × 756.14
  4. Step 4: Simplify right side
    2,605.50x = 2,954,722.27
  5. Step 5: Solve for x
    x = 2,954,722.27/2,605.50
  6. Step 6: Final answer
    x = 1,134.03

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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.