Home / 7,321.14-10,975.95-2,640.42

Finding the Fourth Proportional to 7,321.14, 10,975.95 and 2,640.42

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Solution

The fourth proportional to 7,321.14, 10,975.95 and 2,640.42 is: 3,958.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.14 : 10,975.95 = 2,640.42 : x
  2. Step 2: Convert to fraction form
    7,321.14/10,975.95 = 2,640.42/x
  3. Step 3: Cross multiply
    7,321.14x = 10,975.95 × 2,640.42
  4. Step 4: Simplify right side
    7,321.14x = 28,981,117.90
  5. Step 5: Solve for x
    x = 28,981,117.90/7,321.14
  6. Step 6: Final answer
    x = 3,958.55

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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.