Home / 2,104.79-3,149.48-1,815.68

Finding the Fourth Proportional to 2,104.79, 3,149.48 and 1,815.68

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Solution

The fourth proportional to 2,104.79, 3,149.48 and 1,815.68 is: 2,716.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.79 : 3,149.48 = 1,815.68 : x
  2. Step 2: Convert to fraction form
    2,104.79/3,149.48 = 1,815.68/x
  3. Step 3: Cross multiply
    2,104.79x = 3,149.48 × 1,815.68
  4. Step 4: Simplify right side
    2,104.79x = 5,718,460.26
  5. Step 5: Solve for x
    x = 5,718,460.26/2,104.79
  6. Step 6: Final answer
    x = 2,716.89

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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.