Home / 2,191.41-3,286.80-730.35

Finding the Fourth Proportional to 2,191.41, 3,286.80 and 730.35

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Solution

The fourth proportional to 2,191.41, 3,286.80 and 730.35 is: 1,095.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.41 : 3,286.80 = 730.35 : x
  2. Step 2: Convert to fraction form
    2,191.41/3,286.80 = 730.35/x
  3. Step 3: Cross multiply
    2,191.41x = 3,286.80 × 730.35
  4. Step 4: Simplify right side
    2,191.41x = 2,400,514.38
  5. Step 5: Solve for x
    x = 2,400,514.38/2,191.41
  6. Step 6: Final answer
    x = 1,095.42

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1.5x scale

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.