Home / 5,221.22-7,205.24-2,831.20

Finding the Fourth Proportional to 5,221.22, 7,205.24 and 2,831.20

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Solution

The fourth proportional to 5,221.22, 7,205.24 and 2,831.20 is: 3,907.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.22 : 7,205.24 = 2,831.20 : x
  2. Step 2: Convert to fraction form
    5,221.22/7,205.24 = 2,831.20/x
  3. Step 3: Cross multiply
    5,221.22x = 7,205.24 × 2,831.20
  4. Step 4: Simplify right side
    5,221.22x = 20,399,464.55
  5. Step 5: Solve for x
    x = 20,399,464.55/5,221.22
  6. Step 6: Final answer
    x = 3,907.03

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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.