Home / 2,076.18-3,113.64-979.44

Finding the Fourth Proportional to 2,076.18, 3,113.64 and 979.44

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Solution

The fourth proportional to 2,076.18, 3,113.64 and 979.44 is: 1,468.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,076.18 : 3,113.64 = 979.44 : x
  2. Step 2: Convert to fraction form
    2,076.18/3,113.64 = 979.44/x
  3. Step 3: Cross multiply
    2,076.18x = 3,113.64 × 979.44
  4. Step 4: Simplify right side
    2,076.18x = 3,049,623.56
  5. Step 5: Solve for x
    x = 3,049,623.56/2,076.18
  6. Step 6: Final answer
    x = 1,468.86

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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.