Home / 3,511.86-5,267.78-1,431.41

Finding the Fourth Proportional to 3,511.86, 5,267.78 and 1,431.41

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Solution

The fourth proportional to 3,511.86, 5,267.78 and 1,431.41 is: 2,147.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.86 : 5,267.78 = 1,431.41 : x
  2. Step 2: Convert to fraction form
    3,511.86/5,267.78 = 1,431.41/x
  3. Step 3: Cross multiply
    3,511.86x = 5,267.78 × 1,431.41
  4. Step 4: Simplify right side
    3,511.86x = 7,540,319.47
  5. Step 5: Solve for x
    x = 7,540,319.47/3,511.86
  6. Step 6: Final answer
    x = 2,147.10

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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.