Home / 3,207.13-4,422.84-2,128.49

Finding the Fourth Proportional to 3,207.13, 4,422.84 and 2,128.49

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Solution

The fourth proportional to 3,207.13, 4,422.84 and 2,128.49 is: 2,935.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,207.13 : 4,422.84 = 2,128.49 : x
  2. Step 2: Convert to fraction form
    3,207.13/4,422.84 = 2,128.49/x
  3. Step 3: Cross multiply
    3,207.13x = 4,422.84 × 2,128.49
  4. Step 4: Simplify right side
    3,207.13x = 9,413,982.08
  5. Step 5: Solve for x
    x = 9,413,982.08/3,207.13
  6. Step 6: Final answer
    x = 2,935.33

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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.