Home / 2,540.12-3,810.17-1,078.25

Finding the Fourth Proportional to 2,540.12, 3,810.17 and 1,078.25

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Solution

The fourth proportional to 2,540.12, 3,810.17 and 1,078.25 is: 1,617.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.12 : 3,810.17 = 1,078.25 : x
  2. Step 2: Convert to fraction form
    2,540.12/3,810.17 = 1,078.25/x
  3. Step 3: Cross multiply
    2,540.12x = 3,810.17 × 1,078.25
  4. Step 4: Simplify right side
    2,540.12x = 4,108,299.45
  5. Step 5: Solve for x
    x = 4,108,299.45/2,540.12
  6. Step 6: Final answer
    x = 1,617.37

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1.5x scale

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.