Home / 3,209.04-4,427.68-1,811.76

Finding the Fourth Proportional to 3,209.04, 4,427.68 and 1,811.76

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Solution

The fourth proportional to 3,209.04, 4,427.68 and 1,811.76 is: 2,499.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.04 : 4,427.68 = 1,811.76 : x
  2. Step 2: Convert to fraction form
    3,209.04/4,427.68 = 1,811.76/x
  3. Step 3: Cross multiply
    3,209.04x = 4,427.68 × 1,811.76
  4. Step 4: Simplify right side
    3,209.04x = 8,021,893.52
  5. Step 5: Solve for x
    x = 8,021,893.52/3,209.04
  6. Step 6: Final answer
    x = 2,499.78

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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.