Home / 2,051.21-3,076.20-1,076.78

Finding the Fourth Proportional to 2,051.21, 3,076.20 and 1,076.78

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Solution

The fourth proportional to 2,051.21, 3,076.20 and 1,076.78 is: 1,614.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,051.21 : 3,076.20 = 1,076.78 : x
  2. Step 2: Convert to fraction form
    2,051.21/3,076.20 = 1,076.78/x
  3. Step 3: Cross multiply
    2,051.21x = 3,076.20 × 1,076.78
  4. Step 4: Simplify right side
    2,051.21x = 3,312,390.64
  5. Step 5: Solve for x
    x = 3,312,390.64/2,051.21
  6. Step 6: Final answer
    x = 1,614.85

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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.