Home / 3,318.12-4,579.50-1,920.60

Finding the Fourth Proportional to 3,318.12, 4,579.50 and 1,920.60

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Solution

The fourth proportional to 3,318.12, 4,579.50 and 1,920.60 is: 2,650.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.12 : 4,579.50 = 1,920.60 : x
  2. Step 2: Convert to fraction form
    3,318.12/4,579.50 = 1,920.60/x
  3. Step 3: Cross multiply
    3,318.12x = 4,579.50 × 1,920.60
  4. Step 4: Simplify right side
    3,318.12x = 8,795,387.70
  5. Step 5: Solve for x
    x = 8,795,387.70/3,318.12
  6. Step 6: Final answer
    x = 2,650.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.