Home / 2,748-3,789.39-1,909.65

Finding the Fourth Proportional to 2,748, 3,789.39 and 1,909.65

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Solution

The fourth proportional to 2,748, 3,789.39 and 1,909.65 is: 2,633.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748 : 3,789.39 = 1,909.65 : x
  2. Step 2: Convert to fraction form
    2,748/3,789.39 = 1,909.65/x
  3. Step 3: Cross multiply
    2,748x = 3,789.39 × 1,909.65
  4. Step 4: Simplify right side
    2,748x = 7,236,408.61
  5. Step 5: Solve for x
    x = 7,236,408.61/2,748
  6. Step 6: Final answer
    x = 2,633.34

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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.