Home / 3,318.24-4,579.20-1,921.44

Finding the Fourth Proportional to 3,318.24, 4,579.20 and 1,921.44

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Solution

The fourth proportional to 3,318.24, 4,579.20 and 1,921.44 is: 2,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.24 : 4,579.20 = 1,921.44 : x
  2. Step 2: Convert to fraction form
    3,318.24/4,579.20 = 1,921.44/x
  3. Step 3: Cross multiply
    3,318.24x = 4,579.20 × 1,921.44
  4. Step 4: Simplify right side
    3,318.24x = 8,798,658.05
  5. Step 5: Solve for x
    x = 8,798,658.05/3,318.24
  6. Step 6: Final answer
    x = 2,651.60

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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.