Home / 5,185.72-7,779.95-2,719.88

Finding the Fourth Proportional to 5,185.72, 7,779.95 and 2,719.88

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Solution

The fourth proportional to 5,185.72, 7,779.95 and 2,719.88 is: 4,080.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.72 : 7,779.95 = 2,719.88 : x
  2. Step 2: Convert to fraction form
    5,185.72/7,779.95 = 2,719.88/x
  3. Step 3: Cross multiply
    5,185.72x = 7,779.95 × 2,719.88
  4. Step 4: Simplify right side
    5,185.72x = 21,160,517.28
  5. Step 5: Solve for x
    x = 21,160,517.28/5,185.72
  6. Step 6: Final answer
    x = 4,080.54

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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.