Home / 1,609.26-2,220.64-936.96

Finding the Fourth Proportional to 1,609.26, 2,220.64 and 936.96

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Solution

The fourth proportional to 1,609.26, 2,220.64 and 936.96 is: 1,292.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.26 : 2,220.64 = 936.96 : x
  2. Step 2: Convert to fraction form
    1,609.26/2,220.64 = 936.96/x
  3. Step 3: Cross multiply
    1,609.26x = 2,220.64 × 936.96
  4. Step 4: Simplify right side
    1,609.26x = 2,080,650.85
  5. Step 5: Solve for x
    x = 2,080,650.85/1,609.26
  6. Step 6: Final answer
    x = 1,292.92

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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.