Home / 3,208.20-4,812.32-1,643.76

Finding the Fourth Proportional to 3,208.20, 4,812.32 and 1,643.76

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Solution

The fourth proportional to 3,208.20, 4,812.32 and 1,643.76 is: 2,465.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.20 : 4,812.32 = 1,643.76 : x
  2. Step 2: Convert to fraction form
    3,208.20/4,812.32 = 1,643.76/x
  3. Step 3: Cross multiply
    3,208.20x = 4,812.32 × 1,643.76
  4. Step 4: Simplify right side
    3,208.20x = 7,910,299.12
  5. Step 5: Solve for x
    x = 7,910,299.12/3,208.20
  6. Step 6: Final answer
    x = 2,465.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.