Home / 3,189.29-4,778.28-2,722.32

Finding the Fourth Proportional to 3,189.29, 4,778.28 and 2,722.32

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Solution

The fourth proportional to 3,189.29, 4,778.28 and 2,722.32 is: 4,078.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.29 : 4,778.28 = 2,722.32 : x
  2. Step 2: Convert to fraction form
    3,189.29/4,778.28 = 2,722.32/x
  3. Step 3: Cross multiply
    3,189.29x = 4,778.28 × 2,722.32
  4. Step 4: Simplify right side
    3,189.29x = 13,008,007.21
  5. Step 5: Solve for x
    x = 13,008,007.21/3,189.29
  6. Step 6: Final answer
    x = 4,078.66

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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.