Home / 3,789.12-5,684.40-1,192.80

Finding the Fourth Proportional to 3,789.12, 5,684.40 and 1,192.80

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Solution

The fourth proportional to 3,789.12, 5,684.40 and 1,192.80 is: 1,789.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.12 : 5,684.40 = 1,192.80 : x
  2. Step 2: Convert to fraction form
    3,789.12/5,684.40 = 1,192.80/x
  3. Step 3: Cross multiply
    3,789.12x = 5,684.40 × 1,192.80
  4. Step 4: Simplify right side
    3,789.12x = 6,780,352.32
  5. Step 5: Solve for x
    x = 6,780,352.32/3,789.12
  6. Step 6: Final answer
    x = 1,789.43

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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.