Home / 3,620.90-4,999.40-2,825.09

Finding the Fourth Proportional to 3,620.90, 4,999.40 and 2,825.09

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Solution

The fourth proportional to 3,620.90, 4,999.40 and 2,825.09 is: 3,900.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.90 : 4,999.40 = 2,825.09 : x
  2. Step 2: Convert to fraction form
    3,620.90/4,999.40 = 2,825.09/x
  3. Step 3: Cross multiply
    3,620.90x = 4,999.40 × 2,825.09
  4. Step 4: Simplify right side
    3,620.90x = 14,123,754.95
  5. Step 5: Solve for x
    x = 14,123,754.95/3,620.90
  6. Step 6: Final answer
    x = 3,900.62

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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.