Home / 3,209.08-4,428.54-1,811.80

Finding the Fourth Proportional to 3,209.08, 4,428.54 and 1,811.80

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Solution

The fourth proportional to 3,209.08, 4,428.54 and 1,811.80 is: 2,500.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.08 : 4,428.54 = 1,811.80 : x
  2. Step 2: Convert to fraction form
    3,209.08/4,428.54 = 1,811.80/x
  3. Step 3: Cross multiply
    3,209.08x = 4,428.54 × 1,811.80
  4. Step 4: Simplify right side
    3,209.08x = 8,023,628.77
  5. Step 5: Solve for x
    x = 8,023,628.77/3,209.08
  6. Step 6: Final answer
    x = 2,500.29

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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.