Home / 3,796.20-5,238.12-2,117.40

Finding the Fourth Proportional to 3,796.20, 5,238.12 and 2,117.40

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Solution

The fourth proportional to 3,796.20, 5,238.12 and 2,117.40 is: 2,921.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,796.20 : 5,238.12 = 2,117.40 : x
  2. Step 2: Convert to fraction form
    3,796.20/5,238.12 = 2,117.40/x
  3. Step 3: Cross multiply
    3,796.20x = 5,238.12 × 2,117.40
  4. Step 4: Simplify right side
    3,796.20x = 11,091,195.29
  5. Step 5: Solve for x
    x = 11,091,195.29/3,796.20
  6. Step 6: Final answer
    x = 2,921.66

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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.