Home / 3,193.80-4,778.55-2,100.30

Finding the Fourth Proportional to 3,193.80, 4,778.55 and 2,100.30

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Solution

The fourth proportional to 3,193.80, 4,778.55 and 2,100.30 is: 3,142.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,193.80 : 4,778.55 = 2,100.30 : x
  2. Step 2: Convert to fraction form
    3,193.80/4,778.55 = 2,100.30/x
  3. Step 3: Cross multiply
    3,193.80x = 4,778.55 × 2,100.30
  4. Step 4: Simplify right side
    3,193.80x = 10,036,388.57
  5. Step 5: Solve for x
    x = 10,036,388.57/3,193.80
  6. Step 6: Final answer
    x = 3,142.46

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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.