Home / 2,189.12-3,279.11-1,090.14

Finding the Fourth Proportional to 2,189.12, 3,279.11 and 1,090.14

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Solution

The fourth proportional to 2,189.12, 3,279.11 and 1,090.14 is: 1,632.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.12 : 3,279.11 = 1,090.14 : x
  2. Step 2: Convert to fraction form
    2,189.12/3,279.11 = 1,090.14/x
  3. Step 3: Cross multiply
    2,189.12x = 3,279.11 × 1,090.14
  4. Step 4: Simplify right side
    2,189.12x = 3,574,683.52
  5. Step 5: Solve for x
    x = 3,574,683.52/2,189.12
  6. Step 6: Final answer
    x = 1,632.94

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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.