Home / 2,189.36-3,021.40-1,305.04

Finding the Fourth Proportional to 2,189.36, 3,021.40 and 1,305.04

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Solution

The fourth proportional to 2,189.36, 3,021.40 and 1,305.04 is: 1,801.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.36 : 3,021.40 = 1,305.04 : x
  2. Step 2: Convert to fraction form
    2,189.36/3,021.40 = 1,305.04/x
  3. Step 3: Cross multiply
    2,189.36x = 3,021.40 × 1,305.04
  4. Step 4: Simplify right side
    2,189.36x = 3,943,047.86
  5. Step 5: Solve for x
    x = 3,943,047.86/2,189.36
  6. Step 6: Final answer
    x = 1,801.00

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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.