Home / 3,729.54-5,147.31-2,157.30

Finding the Fourth Proportional to 3,729.54, 5,147.31 and 2,157.30

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Solution

The fourth proportional to 3,729.54, 5,147.31 and 2,157.30 is: 2,977.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,729.54 : 5,147.31 = 2,157.30 : x
  2. Step 2: Convert to fraction form
    3,729.54/5,147.31 = 2,157.30/x
  3. Step 3: Cross multiply
    3,729.54x = 5,147.31 × 2,157.30
  4. Step 4: Simplify right side
    3,729.54x = 11,104,291.86
  5. Step 5: Solve for x
    x = 11,104,291.86/3,729.54
  6. Step 6: Final answer
    x = 2,977.39

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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.