Home / 2,789.86-4,185.69-2,175.68

Finding the Fourth Proportional to 2,789.86, 4,185.69 and 2,175.68

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Solution

The fourth proportional to 2,789.86, 4,185.69 and 2,175.68 is: 3,264.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.86 : 4,185.69 = 2,175.68 : x
  2. Step 2: Convert to fraction form
    2,789.86/4,185.69 = 2,175.68/x
  3. Step 3: Cross multiply
    2,789.86x = 4,185.69 × 2,175.68
  4. Step 4: Simplify right side
    2,789.86x = 9,106,719.14
  5. Step 5: Solve for x
    x = 9,106,719.14/2,789.86
  6. Step 6: Final answer
    x = 3,264.22

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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.