Home / 3,101.12-4,282.08-2,108.48

Finding the Fourth Proportional to 3,101.12, 4,282.08 and 2,108.48

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Solution

The fourth proportional to 3,101.12, 4,282.08 and 2,108.48 is: 2,911.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.12 : 4,282.08 = 2,108.48 : x
  2. Step 2: Convert to fraction form
    3,101.12/4,282.08 = 2,108.48/x
  3. Step 3: Cross multiply
    3,101.12x = 4,282.08 × 2,108.48
  4. Step 4: Simplify right side
    3,101.12x = 9,028,680.04
  5. Step 5: Solve for x
    x = 9,028,680.04/3,101.12
  6. Step 6: Final answer
    x = 2,911.43

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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.