Home / 3,221.24-4,828.96-1,274.80

Finding the Fourth Proportional to 3,221.24, 4,828.96 and 1,274.80

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Solution

The fourth proportional to 3,221.24, 4,828.96 and 1,274.80 is: 1,911.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.24 : 4,828.96 = 1,274.80 : x
  2. Step 2: Convert to fraction form
    3,221.24/4,828.96 = 1,274.80/x
  3. Step 3: Cross multiply
    3,221.24x = 4,828.96 × 1,274.80
  4. Step 4: Simplify right side
    3,221.24x = 6,155,958.21
  5. Step 5: Solve for x
    x = 6,155,958.21/3,221.24
  6. Step 6: Final answer
    x = 1,911.05

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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.