Home / 2,747.20-3,789.78-1,699.12

Finding the Fourth Proportional to 2,747.20, 3,789.78 and 1,699.12

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Solution

The fourth proportional to 2,747.20, 3,789.78 and 1,699.12 is: 2,343.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.20 : 3,789.78 = 1,699.12 : x
  2. Step 2: Convert to fraction form
    2,747.20/3,789.78 = 1,699.12/x
  3. Step 3: Cross multiply
    2,747.20x = 3,789.78 × 1,699.12
  4. Step 4: Simplify right side
    2,747.20x = 6,439,290.99
  5. Step 5: Solve for x
    x = 6,439,290.99/2,747.20
  6. Step 6: Final answer
    x = 2,343.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.