Home / 1,891.13-2,609.38-1,105.03

Finding the Fourth Proportional to 1,891.13, 2,609.38 and 1,105.03

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Solution

The fourth proportional to 1,891.13, 2,609.38 and 1,105.03 is: 1,524.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.13 : 2,609.38 = 1,105.03 : x
  2. Step 2: Convert to fraction form
    1,891.13/2,609.38 = 1,105.03/x
  3. Step 3: Cross multiply
    1,891.13x = 2,609.38 × 1,105.03
  4. Step 4: Simplify right side
    1,891.13x = 2,883,430.13
  5. Step 5: Solve for x
    x = 2,883,430.13/1,891.13
  6. Step 6: Final answer
    x = 1,524.71

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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.