Home / 2,079.41-3,118.80-692.79

Finding the Fourth Proportional to 2,079.41, 3,118.80 and 692.79

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Solution

The fourth proportional to 2,079.41, 3,118.80 and 692.79 is: 1,039.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.41 : 3,118.80 = 692.79 : x
  2. Step 2: Convert to fraction form
    2,079.41/3,118.80 = 692.79/x
  3. Step 3: Cross multiply
    2,079.41x = 3,118.80 × 692.79
  4. Step 4: Simplify right side
    2,079.41x = 2,160,664.35
  5. Step 5: Solve for x
    x = 2,160,664.35/2,079.41
  6. Step 6: Final answer
    x = 1,039.08

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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.