Home / 3,205.68-4,809.04-1,125.12

Finding the Fourth Proportional to 3,205.68, 4,809.04 and 1,125.12

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Solution

The fourth proportional to 3,205.68, 4,809.04 and 1,125.12 is: 1,687.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.68 : 4,809.04 = 1,125.12 : x
  2. Step 2: Convert to fraction form
    3,205.68/4,809.04 = 1,125.12/x
  3. Step 3: Cross multiply
    3,205.68x = 4,809.04 × 1,125.12
  4. Step 4: Simplify right side
    3,205.68x = 5,410,762.31
  5. Step 5: Solve for x
    x = 5,410,762.31/3,205.68
  6. Step 6: Final answer
    x = 1,687.87

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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.