Home / 2,189.10-3,021.57-1,403.04

Finding the Fourth Proportional to 2,189.10, 3,021.57 and 1,403.04

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Solution

The fourth proportional to 2,189.10, 3,021.57 and 1,403.04 is: 1,936.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.10 : 3,021.57 = 1,403.04 : x
  2. Step 2: Convert to fraction form
    2,189.10/3,021.57 = 1,403.04/x
  3. Step 3: Cross multiply
    2,189.10x = 3,021.57 × 1,403.04
  4. Step 4: Simplify right side
    2,189.10x = 4,239,383.57
  5. Step 5: Solve for x
    x = 4,239,383.57/2,189.10
  6. Step 6: Final answer
    x = 1,936.59

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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.