Home / 2,189.48-3,285.63-1,149.03

Finding the Fourth Proportional to 2,189.48, 3,285.63 and 1,149.03

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Solution

The fourth proportional to 2,189.48, 3,285.63 and 1,149.03 is: 1,724.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.48 : 3,285.63 = 1,149.03 : x
  2. Step 2: Convert to fraction form
    2,189.48/3,285.63 = 1,149.03/x
  3. Step 3: Cross multiply
    2,189.48x = 3,285.63 × 1,149.03
  4. Step 4: Simplify right side
    2,189.48x = 3,775,287.44
  5. Step 5: Solve for x
    x = 3,775,287.44/2,189.48
  6. Step 6: Final answer
    x = 1,724.29

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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.