Home / 3,135.20-4,327.06-1,808.80

Finding the Fourth Proportional to 3,135.20, 4,327.06 and 1,808.80

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Solution

The fourth proportional to 3,135.20, 4,327.06 and 1,808.80 is: 2,496.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.20 : 4,327.06 = 1,808.80 : x
  2. Step 2: Convert to fraction form
    3,135.20/4,327.06 = 1,808.80/x
  3. Step 3: Cross multiply
    3,135.20x = 4,327.06 × 1,808.80
  4. Step 4: Simplify right side
    3,135.20x = 7,826,786.13
  5. Step 5: Solve for x
    x = 7,826,786.13/3,135.20
  6. Step 6: Final answer
    x = 2,496.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.