Home / 3,680.22-5,078.66-2,189.28

Finding the Fourth Proportional to 3,680.22, 5,078.66 and 2,189.28

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Solution

The fourth proportional to 3,680.22, 5,078.66 and 2,189.28 is: 3,021.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.22 : 5,078.66 = 2,189.28 : x
  2. Step 2: Convert to fraction form
    3,680.22/5,078.66 = 2,189.28/x
  3. Step 3: Cross multiply
    3,680.22x = 5,078.66 × 2,189.28
  4. Step 4: Simplify right side
    3,680.22x = 11,118,608.76
  5. Step 5: Solve for x
    x = 11,118,608.76/3,680.22
  6. Step 6: Final answer
    x = 3,021.18

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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.