Home / 5,221.42-7,205.78-2,863.65

Finding the Fourth Proportional to 5,221.42, 7,205.78 and 2,863.65

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Solution

The fourth proportional to 5,221.42, 7,205.78 and 2,863.65 is: 3,951.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.42 : 7,205.78 = 2,863.65 : x
  2. Step 2: Convert to fraction form
    5,221.42/7,205.78 = 2,863.65/x
  3. Step 3: Cross multiply
    5,221.42x = 7,205.78 × 2,863.65
  4. Step 4: Simplify right side
    5,221.42x = 20,634,831.90
  5. Step 5: Solve for x
    x = 20,634,831.90/5,221.42
  6. Step 6: Final answer
    x = 3,951.96

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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.