Home / 3,278.80-4,918.56-1,330.72

Finding the Fourth Proportional to 3,278.80, 4,918.56 and 1,330.72

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Solution

The fourth proportional to 3,278.80, 4,918.56 and 1,330.72 is: 1,996.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.80 : 4,918.56 = 1,330.72 : x
  2. Step 2: Convert to fraction form
    3,278.80/4,918.56 = 1,330.72/x
  3. Step 3: Cross multiply
    3,278.80x = 4,918.56 × 1,330.72
  4. Step 4: Simplify right side
    3,278.80x = 6,545,226.16
  5. Step 5: Solve for x
    x = 6,545,226.16/3,278.80
  6. Step 6: Final answer
    x = 1,996.23

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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.