Home / 5,619.78-8,431.49-2,698.31

Finding the Fourth Proportional to 5,619.78, 8,431.49 and 2,698.31

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Solution

The fourth proportional to 5,619.78, 8,431.49 and 2,698.31 is: 4,048.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.78 : 8,431.49 = 2,698.31 : x
  2. Step 2: Convert to fraction form
    5,619.78/8,431.49 = 2,698.31/x
  3. Step 3: Cross multiply
    5,619.78x = 8,431.49 × 2,698.31
  4. Step 4: Simplify right side
    5,619.78x = 22,750,773.78
  5. Step 5: Solve for x
    x = 22,750,773.78/5,619.78
  6. Step 6: Final answer
    x = 4,048.34

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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.