Home / 2,189.44-3,021.36-1,245.12

Finding the Fourth Proportional to 2,189.44, 3,021.36 and 1,245.12

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Solution

The fourth proportional to 2,189.44, 3,021.36 and 1,245.12 is: 1,718.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.44 : 3,021.36 = 1,245.12 : x
  2. Step 2: Convert to fraction form
    2,189.44/3,021.36 = 1,245.12/x
  3. Step 3: Cross multiply
    2,189.44x = 3,021.36 × 1,245.12
  4. Step 4: Simplify right side
    2,189.44x = 3,761,955.76
  5. Step 5: Solve for x
    x = 3,761,955.76/2,189.44
  6. Step 6: Final answer
    x = 1,718.23

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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.