Home / 3,278.08-4,917.36-1,330.72

Finding the Fourth Proportional to 3,278.08, 4,917.36 and 1,330.72

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Solution

The fourth proportional to 3,278.08, 4,917.36 and 1,330.72 is: 1,996.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.08 : 4,917.36 = 1,330.72 : x
  2. Step 2: Convert to fraction form
    3,278.08/4,917.36 = 1,330.72/x
  3. Step 3: Cross multiply
    3,278.08x = 4,917.36 × 1,330.72
  4. Step 4: Simplify right side
    3,278.08x = 6,543,629.30
  5. Step 5: Solve for x
    x = 6,543,629.30/3,278.08
  6. Step 6: Final answer
    x = 1,996.18

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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.