Home / 2,540.64-3,809.16-979.33

Finding the Fourth Proportional to 2,540.64, 3,809.16 and 979.33

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Solution

The fourth proportional to 2,540.64, 3,809.16 and 979.33 is: 1,468.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.64 : 3,809.16 = 979.33 : x
  2. Step 2: Convert to fraction form
    2,540.64/3,809.16 = 979.33/x
  3. Step 3: Cross multiply
    2,540.64x = 3,809.16 × 979.33
  4. Step 4: Simplify right side
    2,540.64x = 3,730,424.66
  5. Step 5: Solve for x
    x = 3,730,424.66/2,540.64
  6. Step 6: Final answer
    x = 1,468.30

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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.