Home / 3,189.20-4,783.80-880.70

Finding the Fourth Proportional to 3,189.20, 4,783.80 and 880.70

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Solution

The fourth proportional to 3,189.20, 4,783.80 and 880.70 is: 1,321.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.20 : 4,783.80 = 880.70 : x
  2. Step 2: Convert to fraction form
    3,189.20/4,783.80 = 880.70/x
  3. Step 3: Cross multiply
    3,189.20x = 4,783.80 × 880.70
  4. Step 4: Simplify right side
    3,189.20x = 4,213,092.66
  5. Step 5: Solve for x
    x = 4,213,092.66/3,189.20
  6. Step 6: Final answer
    x = 1,321.05

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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.