Home / 2,189.11-3,020.43-1,404.22

Finding the Fourth Proportional to 2,189.11, 3,020.43 and 1,404.22

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Solution

The fourth proportional to 2,189.11, 3,020.43 and 1,404.22 is: 1,937.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.11 : 3,020.43 = 1,404.22 : x
  2. Step 2: Convert to fraction form
    2,189.11/3,020.43 = 1,404.22/x
  3. Step 3: Cross multiply
    2,189.11x = 3,020.43 × 1,404.22
  4. Step 4: Simplify right side
    2,189.11x = 4,241,340.66
  5. Step 5: Solve for x
    x = 4,241,340.66/2,189.11
  6. Step 6: Final answer
    x = 1,937.47

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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.