Home / 3,122.48-4,286.45-2,679.62

Finding the Fourth Proportional to 3,122.48, 4,286.45 and 2,679.62

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Solution

The fourth proportional to 3,122.48, 4,286.45 and 2,679.62 is: 3,678.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.48 : 4,286.45 = 2,679.62 : x
  2. Step 2: Convert to fraction form
    3,122.48/4,286.45 = 2,679.62/x
  3. Step 3: Cross multiply
    3,122.48x = 4,286.45 × 2,679.62
  4. Step 4: Simplify right side
    3,122.48x = 11,486,042.42
  5. Step 5: Solve for x
    x = 11,486,042.42/3,122.48
  6. Step 6: Final answer
    x = 3,678.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.