Home / 3,718.20-5,131.11-2,146.29

Finding the Fourth Proportional to 3,718.20, 5,131.11 and 2,146.29

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Solution

The fourth proportional to 3,718.20, 5,131.11 and 2,146.29 is: 2,961.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.20 : 5,131.11 = 2,146.29 : x
  2. Step 2: Convert to fraction form
    3,718.20/5,131.11 = 2,146.29/x
  3. Step 3: Cross multiply
    3,718.20x = 5,131.11 × 2,146.29
  4. Step 4: Simplify right side
    3,718.20x = 11,012,844.27
  5. Step 5: Solve for x
    x = 11,012,844.27/3,718.20
  6. Step 6: Final answer
    x = 2,961.88

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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.