Home / 3,305.45-4,561.03-2,128.12

Finding the Fourth Proportional to 3,305.45, 4,561.03 and 2,128.12

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Solution

The fourth proportional to 3,305.45, 4,561.03 and 2,128.12 is: 2,936.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,305.45 : 4,561.03 = 2,128.12 : x
  2. Step 2: Convert to fraction form
    3,305.45/4,561.03 = 2,128.12/x
  3. Step 3: Cross multiply
    3,305.45x = 4,561.03 × 2,128.12
  4. Step 4: Simplify right side
    3,305.45x = 9,706,402.44
  5. Step 5: Solve for x
    x = 9,706,402.44/3,305.45
  6. Step 6: Final answer
    x = 2,936.48

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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.