Home / 3,143.21-4,330.46-2,479.82

Finding the Fourth Proportional to 3,143.21, 4,330.46 and 2,479.82

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Solution

The fourth proportional to 3,143.21, 4,330.46 and 2,479.82 is: 3,416.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.21 : 4,330.46 = 2,479.82 : x
  2. Step 2: Convert to fraction form
    3,143.21/4,330.46 = 2,479.82/x
  3. Step 3: Cross multiply
    3,143.21x = 4,330.46 × 2,479.82
  4. Step 4: Simplify right side
    3,143.21x = 10,738,745.86
  5. Step 5: Solve for x
    x = 10,738,745.86/3,143.21
  6. Step 6: Final answer
    x = 3,416.50

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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.