Home / 3,288.80-4,930.76-1,207.70

Finding the Fourth Proportional to 3,288.80, 4,930.76 and 1,207.70

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Solution

The fourth proportional to 3,288.80, 4,930.76 and 1,207.70 is: 1,810.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,288.80 : 4,930.76 = 1,207.70 : x
  2. Step 2: Convert to fraction form
    3,288.80/4,930.76 = 1,207.70/x
  3. Step 3: Cross multiply
    3,288.80x = 4,930.76 × 1,207.70
  4. Step 4: Simplify right side
    3,288.80x = 5,954,878.85
  5. Step 5: Solve for x
    x = 5,954,878.85/3,288.80
  6. Step 6: Final answer
    x = 1,810.65

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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.