Home / 3,122.42-4,682.55-1,387.94

Finding the Fourth Proportional to 3,122.42, 4,682.55 and 1,387.94

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Solution

The fourth proportional to 3,122.42, 4,682.55 and 1,387.94 is: 2,081.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.42 : 4,682.55 = 1,387.94 : x
  2. Step 2: Convert to fraction form
    3,122.42/4,682.55 = 1,387.94/x
  3. Step 3: Cross multiply
    3,122.42x = 4,682.55 × 1,387.94
  4. Step 4: Simplify right side
    3,122.42x = 6,499,098.45
  5. Step 5: Solve for x
    x = 6,499,098.45/3,122.42
  6. Step 6: Final answer
    x = 2,081.43

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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.