Home / 2,540.32-3,810.78-1,078.66

Finding the Fourth Proportional to 2,540.32, 3,810.78 and 1,078.66

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Solution

The fourth proportional to 2,540.32, 3,810.78 and 1,078.66 is: 1,618.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.32 : 3,810.78 = 1,078.66 : x
  2. Step 2: Convert to fraction form
    2,540.32/3,810.78 = 1,078.66/x
  3. Step 3: Cross multiply
    2,540.32x = 3,810.78 × 1,078.66
  4. Step 4: Simplify right side
    2,540.32x = 4,110,535.95
  5. Step 5: Solve for x
    x = 4,110,535.95/2,540.32
  6. Step 6: Final answer
    x = 1,618.12

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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.