Home / 2,811.17-3,879.40-1,552.31

Finding the Fourth Proportional to 2,811.17, 3,879.40 and 1,552.31

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Solution

The fourth proportional to 2,811.17, 3,879.40 and 1,552.31 is: 2,142.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.17 : 3,879.40 = 1,552.31 : x
  2. Step 2: Convert to fraction form
    2,811.17/3,879.40 = 1,552.31/x
  3. Step 3: Cross multiply
    2,811.17x = 3,879.40 × 1,552.31
  4. Step 4: Simplify right side
    2,811.17x = 6,022,031.41
  5. Step 5: Solve for x
    x = 6,022,031.41/2,811.17
  6. Step 6: Final answer
    x = 2,142.18

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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.