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Finding the Fourth Proportional to 2,119.88, 3,179.22 and 732.86

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Solution

The fourth proportional to 2,119.88, 3,179.22 and 732.86 is: 1,099.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.88 : 3,179.22 = 732.86 : x
  2. Step 2: Convert to fraction form
    2,119.88/3,179.22 = 732.86/x
  3. Step 3: Cross multiply
    2,119.88x = 3,179.22 × 732.86
  4. Step 4: Simplify right side
    2,119.88x = 2,329,923.17
  5. Step 5: Solve for x
    x = 2,329,923.17/2,119.88
  6. Step 6: Final answer
    x = 1,099.08

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1.5x scale

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.