Home / 3,205.76-4,809.83-1,125.99

Finding the Fourth Proportional to 3,205.76, 4,809.83 and 1,125.99

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Solution

The fourth proportional to 3,205.76, 4,809.83 and 1,125.99 is: 1,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.76 : 4,809.83 = 1,125.99 : x
  2. Step 2: Convert to fraction form
    3,205.76/4,809.83 = 1,125.99/x
  3. Step 3: Cross multiply
    3,205.76x = 4,809.83 × 1,125.99
  4. Step 4: Simplify right side
    3,205.76x = 5,415,814.85
  5. Step 5: Solve for x
    x = 5,415,814.85/3,205.76
  6. Step 6: Final answer
    x = 1,689.40

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1.5x scale

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.