Home / 3,189.20-4,780.96-1,240.94

Finding the Fourth Proportional to 3,189.20, 4,780.96 and 1,240.94

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Solution

The fourth proportional to 3,189.20, 4,780.96 and 1,240.94 is: 1,860.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.20 : 4,780.96 = 1,240.94 : x
  2. Step 2: Convert to fraction form
    3,189.20/4,780.96 = 1,240.94/x
  3. Step 3: Cross multiply
    3,189.20x = 4,780.96 × 1,240.94
  4. Step 4: Simplify right side
    3,189.20x = 5,932,893.35
  5. Step 5: Solve for x
    x = 5,932,893.35/3,189.20
  6. Step 6: Final answer
    x = 1,860.31

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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.