Home / 4,780.82-7,171.20-2,831.63

Finding the Fourth Proportional to 4,780.82, 7,171.20 and 2,831.63

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Solution

The fourth proportional to 4,780.82, 7,171.20 and 2,831.63 is: 4,247.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.82 : 7,171.20 = 2,831.63 : x
  2. Step 2: Convert to fraction form
    4,780.82/7,171.20 = 2,831.63/x
  3. Step 3: Cross multiply
    4,780.82x = 7,171.20 × 2,831.63
  4. Step 4: Simplify right side
    4,780.82x = 20,306,149.20
  5. Step 5: Solve for x
    x = 20,306,149.20/4,780.82
  6. Step 6: Final answer
    x = 4,247.42

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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.