Home / 3,209.09-4,429.13-1,811.84

Finding the Fourth Proportional to 3,209.09, 4,429.13 and 1,811.84

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Solution

The fourth proportional to 3,209.09, 4,429.13 and 1,811.84 is: 2,500.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.09 : 4,429.13 = 1,811.84 : x
  2. Step 2: Convert to fraction form
    3,209.09/4,429.13 = 1,811.84/x
  3. Step 3: Cross multiply
    3,209.09x = 4,429.13 × 1,811.84
  4. Step 4: Simplify right side
    3,209.09x = 8,024,843.69
  5. Step 5: Solve for x
    x = 8,024,843.69/3,209.09
  6. Step 6: Final answer
    x = 2,500.66

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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.