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Finding the Fourth Proportional to 2,607.99, 3,911.88 and 759.07

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Solution

The fourth proportional to 2,607.99, 3,911.88 and 759.07 is: 1,138.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,607.99 : 3,911.88 = 759.07 : x
  2. Step 2: Convert to fraction form
    2,607.99/3,911.88 = 759.07/x
  3. Step 3: Cross multiply
    2,607.99x = 3,911.88 × 759.07
  4. Step 4: Simplify right side
    2,607.99x = 2,969,367.40
  5. Step 5: Solve for x
    x = 2,969,367.40/2,607.99
  6. Step 6: Final answer
    x = 1,138.57

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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.