Home / 2,189.17-3,021.09-1,305.49

Finding the Fourth Proportional to 2,189.17, 3,021.09 and 1,305.49

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Solution

The fourth proportional to 2,189.17, 3,021.09 and 1,305.49 is: 1,801.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.17 : 3,021.09 = 1,305.49 : x
  2. Step 2: Convert to fraction form
    2,189.17/3,021.09 = 1,305.49/x
  3. Step 3: Cross multiply
    2,189.17x = 3,021.09 × 1,305.49
  4. Step 4: Simplify right side
    2,189.17x = 3,943,981.15
  5. Step 5: Solve for x
    x = 3,943,981.15/2,189.17
  6. Step 6: Final answer
    x = 1,801.59

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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.