Home / 3,108.38-4,287.74-2,101.82

Finding the Fourth Proportional to 3,108.38, 4,287.74 and 2,101.82

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Solution

The fourth proportional to 3,108.38, 4,287.74 and 2,101.82 is: 2,899.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.38 : 4,287.74 = 2,101.82 : x
  2. Step 2: Convert to fraction form
    3,108.38/4,287.74 = 2,101.82/x
  3. Step 3: Cross multiply
    3,108.38x = 4,287.74 × 2,101.82
  4. Step 4: Simplify right side
    3,108.38x = 9,012,057.69
  5. Step 5: Solve for x
    x = 9,012,057.69/3,108.38
  6. Step 6: Final answer
    x = 2,899.28

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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.