Home / 2,811.34-3,879.87-1,552.51

Finding the Fourth Proportional to 2,811.34, 3,879.87 and 1,552.51

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Solution

The fourth proportional to 2,811.34, 3,879.87 and 1,552.51 is: 2,142.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.34 : 3,879.87 = 1,552.51 : x
  2. Step 2: Convert to fraction form
    2,811.34/3,879.87 = 1,552.51/x
  3. Step 3: Cross multiply
    2,811.34x = 3,879.87 × 1,552.51
  4. Step 4: Simplify right side
    2,811.34x = 6,023,536.97
  5. Step 5: Solve for x
    x = 6,023,536.97/2,811.34
  6. Step 6: Final answer
    x = 2,142.59

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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.