Home / 2,078.94-3,118.09-692.29

Finding the Fourth Proportional to 2,078.94, 3,118.09 and 692.29

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Solution

The fourth proportional to 2,078.94, 3,118.09 and 692.29 is: 1,038.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.94 : 3,118.09 = 692.29 : x
  2. Step 2: Convert to fraction form
    2,078.94/3,118.09 = 692.29/x
  3. Step 3: Cross multiply
    2,078.94x = 3,118.09 × 692.29
  4. Step 4: Simplify right side
    2,078.94x = 2,158,622.53
  5. Step 5: Solve for x
    x = 2,158,622.53/2,078.94
  6. Step 6: Final answer
    x = 1,038.33

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1.5x scale

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.