Home / 3,729.64-5,146.72-2,158.24

Finding the Fourth Proportional to 3,729.64, 5,146.72 and 2,158.24

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Solution

The fourth proportional to 3,729.64, 5,146.72 and 2,158.24 is: 2,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,729.64 : 5,146.72 = 2,158.24 : x
  2. Step 2: Convert to fraction form
    3,729.64/5,146.72 = 2,158.24/x
  3. Step 3: Cross multiply
    3,729.64x = 5,146.72 × 2,158.24
  4. Step 4: Simplify right side
    3,729.64x = 11,107,856.97
  5. Step 5: Solve for x
    x = 11,107,856.97/3,729.64
  6. Step 6: Final answer
    x = 2,978.27

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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.