Home / 3,718.22-5,131.10-2,146.28

Finding the Fourth Proportional to 3,718.22, 5,131.10 and 2,146.28

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Solution

The fourth proportional to 3,718.22, 5,131.10 and 2,146.28 is: 2,961.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.22 : 5,131.10 = 2,146.28 : x
  2. Step 2: Convert to fraction form
    3,718.22/5,131.10 = 2,146.28/x
  3. Step 3: Cross multiply
    3,718.22x = 5,131.10 × 2,146.28
  4. Step 4: Simplify right side
    3,718.22x = 11,012,777.31
  5. Step 5: Solve for x
    x = 11,012,777.31/3,718.22
  6. Step 6: Final answer
    x = 2,961.84

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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.