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Finding the Fourth Proportional to 5,393.75, 8,075.56 and 2,919.69

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Solution

The fourth proportional to 5,393.75, 8,075.56 and 2,919.69 is: 4,371.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,393.75 : 8,075.56 = 2,919.69 : x
  2. Step 2: Convert to fraction form
    5,393.75/8,075.56 = 2,919.69/x
  3. Step 3: Cross multiply
    5,393.75x = 8,075.56 × 2,919.69
  4. Step 4: Simplify right side
    5,393.75x = 23,578,131.78
  5. Step 5: Solve for x
    x = 23,578,131.78/5,393.75
  6. Step 6: Final answer
    x = 4,371.38

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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.