Home / 2,106.40-3,159.80-936.26

Finding the Fourth Proportional to 2,106.40, 3,159.80 and 936.26

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Solution

The fourth proportional to 2,106.40, 3,159.80 and 936.26 is: 1,404.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.40 : 3,159.80 = 936.26 : x
  2. Step 2: Convert to fraction form
    2,106.40/3,159.80 = 936.26/x
  3. Step 3: Cross multiply
    2,106.40x = 3,159.80 × 936.26
  4. Step 4: Simplify right side
    2,106.40x = 2,958,394.35
  5. Step 5: Solve for x
    x = 2,958,394.35/2,106.40
  6. Step 6: Final answer
    x = 1,404.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.