Home / 3,729.16-5,146.84-2,158.16

Finding the Fourth Proportional to 3,729.16, 5,146.84 and 2,158.16

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Solution

The fourth proportional to 3,729.16, 5,146.84 and 2,158.16 is: 2,978.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,729.16 : 5,146.84 = 2,158.16 : x
  2. Step 2: Convert to fraction form
    3,729.16/5,146.84 = 2,158.16/x
  3. Step 3: Cross multiply
    3,729.16x = 5,146.84 × 2,158.16
  4. Step 4: Simplify right side
    3,729.16x = 11,107,704.21
  5. Step 5: Solve for x
    x = 11,107,704.21/3,729.16
  6. Step 6: Final answer
    x = 2,978.61

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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.