Home / 3,205.80-4,808.30-1,125.66

Finding the Fourth Proportional to 3,205.80, 4,808.30 and 1,125.66

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Solution

The fourth proportional to 3,205.80, 4,808.30 and 1,125.66 is: 1,688.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.80 : 4,808.30 = 1,125.66 : x
  2. Step 2: Convert to fraction form
    3,205.80/4,808.30 = 1,125.66/x
  3. Step 3: Cross multiply
    3,205.80x = 4,808.30 × 1,125.66
  4. Step 4: Simplify right side
    3,205.80x = 5,412,505.35
  5. Step 5: Solve for x
    x = 5,412,505.35/3,205.80
  6. Step 6: Final answer
    x = 1,688.35

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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.