Home / 3,122.60-4,310.78-2,412.86

Finding the Fourth Proportional to 3,122.60, 4,310.78 and 2,412.86

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Solution

The fourth proportional to 3,122.60, 4,310.78 and 2,412.86 is: 3,330.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.60 : 4,310.78 = 2,412.86 : x
  2. Step 2: Convert to fraction form
    3,122.60/4,310.78 = 2,412.86/x
  3. Step 3: Cross multiply
    3,122.60x = 4,310.78 × 2,412.86
  4. Step 4: Simplify right side
    3,122.60x = 10,401,308.63
  5. Step 5: Solve for x
    x = 10,401,308.63/3,122.60
  6. Step 6: Final answer
    x = 3,330.98

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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.