Home / 5,115.19-7,672.78-2,039.35

Finding the Fourth Proportional to 5,115.19, 7,672.78 and 2,039.35

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Solution

The fourth proportional to 5,115.19, 7,672.78 and 2,039.35 is: 3,059.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.19 : 7,672.78 = 2,039.35 : x
  2. Step 2: Convert to fraction form
    5,115.19/7,672.78 = 2,039.35/x
  3. Step 3: Cross multiply
    5,115.19x = 7,672.78 × 2,039.35
  4. Step 4: Simplify right side
    5,115.19x = 15,647,467.26
  5. Step 5: Solve for x
    x = 15,647,467.26/5,115.19
  6. Step 6: Final answer
    x = 3,059.02

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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.