Home / 3,812.72-5,719.02-2,779.28

Finding the Fourth Proportional to 3,812.72, 5,719.02 and 2,779.28

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Solution

The fourth proportional to 3,812.72, 5,719.02 and 2,779.28 is: 4,168.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.72 : 5,719.02 = 2,779.28 : x
  2. Step 2: Convert to fraction form
    3,812.72/5,719.02 = 2,779.28/x
  3. Step 3: Cross multiply
    3,812.72x = 5,719.02 × 2,779.28
  4. Step 4: Simplify right side
    3,812.72x = 15,894,757.91
  5. Step 5: Solve for x
    x = 15,894,757.91/3,812.72
  6. Step 6: Final answer
    x = 4,168.88

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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.