Home / 3,122.64-4,682.70-2,149.02

Finding the Fourth Proportional to 3,122.64, 4,682.70 and 2,149.02

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Solution

The fourth proportional to 3,122.64, 4,682.70 and 2,149.02 is: 3,222.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.64 : 4,682.70 = 2,149.02 : x
  2. Step 2: Convert to fraction form
    3,122.64/4,682.70 = 2,149.02/x
  3. Step 3: Cross multiply
    3,122.64x = 4,682.70 × 2,149.02
  4. Step 4: Simplify right side
    3,122.64x = 10,063,215.95
  5. Step 5: Solve for x
    x = 10,063,215.95/3,122.64
  6. Step 6: Final answer
    x = 3,222.66

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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.