Home / 1,613.85-2,227.35-905.97

Finding the Fourth Proportional to 1,613.85, 2,227.35 and 905.97

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Solution

The fourth proportional to 1,613.85, 2,227.35 and 905.97 is: 1,250.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613.85 : 2,227.35 = 905.97 : x
  2. Step 2: Convert to fraction form
    1,613.85/2,227.35 = 905.97/x
  3. Step 3: Cross multiply
    1,613.85x = 2,227.35 × 905.97
  4. Step 4: Simplify right side
    1,613.85x = 2,017,912.28
  5. Step 5: Solve for x
    x = 2,017,912.28/1,613.85
  6. Step 6: Final answer
    x = 1,250.37

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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.