Home / 3,108.36-4,287.30-2,164.49

Finding the Fourth Proportional to 3,108.36, 4,287.30 and 2,164.49

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Solution

The fourth proportional to 3,108.36, 4,287.30 and 2,164.49 is: 2,985.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.36 : 4,287.30 = 2,164.49 : x
  2. Step 2: Convert to fraction form
    3,108.36/4,287.30 = 2,164.49/x
  3. Step 3: Cross multiply
    3,108.36x = 4,287.30 × 2,164.49
  4. Step 4: Simplify right side
    3,108.36x = 9,279,796.54
  5. Step 5: Solve for x
    x = 9,279,796.54/3,108.36
  6. Step 6: Final answer
    x = 2,985.43

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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.