Home / 3,218.85-4,828.19-1,369.40

Finding the Fourth Proportional to 3,218.85, 4,828.19 and 1,369.40

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Solution

The fourth proportional to 3,218.85, 4,828.19 and 1,369.40 is: 2,054.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.85 : 4,828.19 = 1,369.40 : x
  2. Step 2: Convert to fraction form
    3,218.85/4,828.19 = 1,369.40/x
  3. Step 3: Cross multiply
    3,218.85x = 4,828.19 × 1,369.40
  4. Step 4: Simplify right side
    3,218.85x = 6,611,692.40
  5. Step 5: Solve for x
    x = 6,611,692.40/3,218.85
  6. Step 6: Final answer
    x = 2,054.05

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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.