Home / 2,789.40-4,175.46-2,092.20

Finding the Fourth Proportional to 2,789.40, 4,175.46 and 2,092.20

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Solution

The fourth proportional to 2,789.40, 4,175.46 and 2,092.20 is: 3,131.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.40 : 4,175.46 = 2,092.20 : x
  2. Step 2: Convert to fraction form
    2,789.40/4,175.46 = 2,092.20/x
  3. Step 3: Cross multiply
    2,789.40x = 4,175.46 × 2,092.20
  4. Step 4: Simplify right side
    2,789.40x = 8,735,897.41
  5. Step 5: Solve for x
    x = 8,735,897.41/2,789.40
  6. Step 6: Final answer
    x = 3,131.82

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1.5x scale

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.