Home / 5,406.78-8,113.80-2,119.44

Finding the Fourth Proportional to 5,406.78, 8,113.80 and 2,119.44

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Solution

The fourth proportional to 5,406.78, 8,113.80 and 2,119.44 is: 3,180.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,406.78 : 8,113.80 = 2,119.44 : x
  2. Step 2: Convert to fraction form
    5,406.78/8,113.80 = 2,119.44/x
  3. Step 3: Cross multiply
    5,406.78x = 8,113.80 × 2,119.44
  4. Step 4: Simplify right side
    5,406.78x = 17,196,712.27
  5. Step 5: Solve for x
    x = 17,196,712.27/5,406.78
  6. Step 6: Final answer
    x = 3,180.58

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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.