Home / 2,119.20-3,179.44-732.72

Finding the Fourth Proportional to 2,119.20, 3,179.44 and 732.72

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Solution

The fourth proportional to 2,119.20, 3,179.44 and 732.72 is: 1,099.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.20 : 3,179.44 = 732.72 : x
  2. Step 2: Convert to fraction form
    2,119.20/3,179.44 = 732.72/x
  3. Step 3: Cross multiply
    2,119.20x = 3,179.44 × 732.72
  4. Step 4: Simplify right side
    2,119.20x = 2,329,639.28
  5. Step 5: Solve for x
    x = 2,329,639.28/2,119.20
  6. Step 6: Final answer
    x = 1,099.30

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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.