Home / 3,209.15-4,428.42-1,811.81

Finding the Fourth Proportional to 3,209.15, 4,428.42 and 1,811.81

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Solution

The fourth proportional to 3,209.15, 4,428.42 and 1,811.81 is: 2,500.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.15 : 4,428.42 = 1,811.81 : x
  2. Step 2: Convert to fraction form
    3,209.15/4,428.42 = 1,811.81/x
  3. Step 3: Cross multiply
    3,209.15x = 4,428.42 × 1,811.81
  4. Step 4: Simplify right side
    3,209.15x = 8,023,459.92
  5. Step 5: Solve for x
    x = 8,023,459.92/3,209.15
  6. Step 6: Final answer
    x = 2,500.18

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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.