Home / 3,194.40-4,789.20-2,151.48

Finding the Fourth Proportional to 3,194.40, 4,789.20 and 2,151.48

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Solution

The fourth proportional to 3,194.40, 4,789.20 and 2,151.48 is: 3,225.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,194.40 : 4,789.20 = 2,151.48 : x
  2. Step 2: Convert to fraction form
    3,194.40/4,789.20 = 2,151.48/x
  3. Step 3: Cross multiply
    3,194.40x = 4,789.20 × 2,151.48
  4. Step 4: Simplify right side
    3,194.40x = 10,303,858.12
  5. Step 5: Solve for x
    x = 10,303,858.12/3,194.40
  6. Step 6: Final answer
    x = 3,225.60

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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.