Home / 3,620.45-4,996.22-2,129.22

Finding the Fourth Proportional to 3,620.45, 4,996.22 and 2,129.22

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Solution

The fourth proportional to 3,620.45, 4,996.22 and 2,129.22 is: 2,938.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.45 : 4,996.22 = 2,129.22 : x
  2. Step 2: Convert to fraction form
    3,620.45/4,996.22 = 2,129.22/x
  3. Step 3: Cross multiply
    3,620.45x = 4,996.22 × 2,129.22
  4. Step 4: Simplify right side
    3,620.45x = 10,638,040.90
  5. Step 5: Solve for x
    x = 10,638,040.90/3,620.45
  6. Step 6: Final answer
    x = 2,938.32

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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.