Home / 2,189.16-3,288.60-2,120.04

Finding the Fourth Proportional to 2,189.16, 3,288.60 and 2,120.04

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Solution

The fourth proportional to 2,189.16, 3,288.60 and 2,120.04 is: 3,184.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.16 : 3,288.60 = 2,120.04 : x
  2. Step 2: Convert to fraction form
    2,189.16/3,288.60 = 2,120.04/x
  3. Step 3: Cross multiply
    2,189.16x = 3,288.60 × 2,120.04
  4. Step 4: Simplify right side
    2,189.16x = 6,971,963.54
  5. Step 5: Solve for x
    x = 6,971,963.54/2,189.16
  6. Step 6: Final answer
    x = 3,184.77

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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.