Home / 2,540.16-3,809.94-1,078.21

Finding the Fourth Proportional to 2,540.16, 3,809.94 and 1,078.21

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Solution

The fourth proportional to 2,540.16, 3,809.94 and 1,078.21 is: 1,617.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.16 : 3,809.94 = 1,078.21 : x
  2. Step 2: Convert to fraction form
    2,540.16/3,809.94 = 1,078.21/x
  3. Step 3: Cross multiply
    2,540.16x = 3,809.94 × 1,078.21
  4. Step 4: Simplify right side
    2,540.16x = 4,107,916.13
  5. Step 5: Solve for x
    x = 4,107,916.13/2,540.16
  6. Step 6: Final answer
    x = 1,617.19

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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.