Home / 2,076.44-3,115.20-778.02

Finding the Fourth Proportional to 2,076.44, 3,115.20 and 778.02

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Solution

The fourth proportional to 2,076.44, 3,115.20 and 778.02 is: 1,167.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,076.44 : 3,115.20 = 778.02 : x
  2. Step 2: Convert to fraction form
    2,076.44/3,115.20 = 778.02/x
  3. Step 3: Cross multiply
    2,076.44x = 3,115.20 × 778.02
  4. Step 4: Simplify right side
    2,076.44x = 2,423,687.90
  5. Step 5: Solve for x
    x = 2,423,687.90/2,076.44
  6. Step 6: Final answer
    x = 1,167.23

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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.