Home / 3,729.76-5,146.75-2,157.96

Finding the Fourth Proportional to 3,729.76, 5,146.75 and 2,157.96

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Solution

The fourth proportional to 3,729.76, 5,146.75 and 2,157.96 is: 2,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,729.76 : 5,146.75 = 2,157.96 : x
  2. Step 2: Convert to fraction form
    3,729.76/5,146.75 = 2,157.96/x
  3. Step 3: Cross multiply
    3,729.76x = 5,146.75 × 2,157.96
  4. Step 4: Simplify right side
    3,729.76x = 11,106,480.63
  5. Step 5: Solve for x
    x = 11,106,480.63/3,729.76
  6. Step 6: Final answer
    x = 2,977.80

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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.