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Finding the Fourth Proportional to 4,692.88, 7,039.29 and 3,811.19

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Solution

The fourth proportional to 4,692.88, 7,039.29 and 3,811.19 is: 5,716.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,692.88 : 7,039.29 = 3,811.19 : x
  2. Step 2: Convert to fraction form
    4,692.88/7,039.29 = 3,811.19/x
  3. Step 3: Cross multiply
    4,692.88x = 7,039.29 × 3,811.19
  4. Step 4: Simplify right side
    4,692.88x = 26,828,075.09
  5. Step 5: Solve for x
    x = 26,828,075.09/4,692.88
  6. Step 6: Final answer
    x = 5,716.76

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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.