Home / 3,729.12-5,589.84-1,419

Finding the Fourth Proportional to 3,729.12, 5,589.84 and 1,419

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Solution

The fourth proportional to 3,729.12, 5,589.84 and 1,419 is: 2,127.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,729.12 : 5,589.84 = 1,419 : x
  2. Step 2: Convert to fraction form
    3,729.12/5,589.84 = 1,419/x
  3. Step 3: Cross multiply
    3,729.12x = 5,589.84 × 1,419
  4. Step 4: Simplify right side
    3,729.12x = 7,931,982.96
  5. Step 5: Solve for x
    x = 7,931,982.96/3,729.12
  6. Step 6: Final answer
    x = 2,127.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.