Home / 3,126.72-4,286.88-3,075.84

Finding the Fourth Proportional to 3,126.72, 4,286.88 and 3,075.84

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Solution

The fourth proportional to 3,126.72, 4,286.88 and 3,075.84 is: 4,217.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.72 : 4,286.88 = 3,075.84 : x
  2. Step 2: Convert to fraction form
    3,126.72/4,286.88 = 3,075.84/x
  3. Step 3: Cross multiply
    3,126.72x = 4,286.88 × 3,075.84
  4. Step 4: Simplify right side
    3,126.72x = 13,185,756.98
  5. Step 5: Solve for x
    x = 13,185,756.98/3,126.72
  6. Step 6: Final answer
    x = 4,217.12

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.