Home / 2,581.85-3,872.78-1,042.49

Finding the Fourth Proportional to 2,581.85, 3,872.78 and 1,042.49

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Solution

The fourth proportional to 2,581.85, 3,872.78 and 1,042.49 is: 1,563.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.85 : 3,872.78 = 1,042.49 : x
  2. Step 2: Convert to fraction form
    2,581.85/3,872.78 = 1,042.49/x
  3. Step 3: Cross multiply
    2,581.85x = 3,872.78 × 1,042.49
  4. Step 4: Simplify right side
    2,581.85x = 4,037,329.21
  5. Step 5: Solve for x
    x = 4,037,329.21/2,581.85
  6. Step 6: Final answer
    x = 1,563.74

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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.