Home / 2,748.16-3,789.12-1,909.56

Finding the Fourth Proportional to 2,748.16, 3,789.12 and 1,909.56

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Solution

The fourth proportional to 2,748.16, 3,789.12 and 1,909.56 is: 2,632.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.16 : 3,789.12 = 1,909.56 : x
  2. Step 2: Convert to fraction form
    2,748.16/3,789.12 = 1,909.56/x
  3. Step 3: Cross multiply
    2,748.16x = 3,789.12 × 1,909.56
  4. Step 4: Simplify right side
    2,748.16x = 7,235,551.99
  5. Step 5: Solve for x
    x = 7,235,551.99/2,748.16
  6. Step 6: Final answer
    x = 2,632.87

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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.