Home / 3,729.76-5,146.67-2,157.56

Finding the Fourth Proportional to 3,729.76, 5,146.67 and 2,157.56

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Solution

The fourth proportional to 3,729.76, 5,146.67 and 2,157.56 is: 2,977.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,729.76 : 5,146.67 = 2,157.56 : x
  2. Step 2: Convert to fraction form
    3,729.76/5,146.67 = 2,157.56/x
  3. Step 3: Cross multiply
    3,729.76x = 5,146.67 × 2,157.56
  4. Step 4: Simplify right side
    3,729.76x = 11,104,249.33
  5. Step 5: Solve for x
    x = 11,104,249.33/3,729.76
  6. Step 6: Final answer
    x = 2,977.20

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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.