Home / 3,146.86-4,720.90-1,067.21

Finding the Fourth Proportional to 3,146.86, 4,720.90 and 1,067.21

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Solution

The fourth proportional to 3,146.86, 4,720.90 and 1,067.21 is: 1,601.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146.86 : 4,720.90 = 1,067.21 : x
  2. Step 2: Convert to fraction form
    3,146.86/4,720.90 = 1,067.21/x
  3. Step 3: Cross multiply
    3,146.86x = 4,720.90 × 1,067.21
  4. Step 4: Simplify right side
    3,146.86x = 5,038,191.69
  5. Step 5: Solve for x
    x = 5,038,191.69/3,146.86
  6. Step 6: Final answer
    x = 1,601.02

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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.