Home / 2,778.80-4,168.76-1,135.47

Finding the Fourth Proportional to 2,778.80, 4,168.76 and 1,135.47

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Solution

The fourth proportional to 2,778.80, 4,168.76 and 1,135.47 is: 1,703.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.80 : 4,168.76 = 1,135.47 : x
  2. Step 2: Convert to fraction form
    2,778.80/4,168.76 = 1,135.47/x
  3. Step 3: Cross multiply
    2,778.80x = 4,168.76 × 1,135.47
  4. Step 4: Simplify right side
    2,778.80x = 4,733,511.87
  5. Step 5: Solve for x
    x = 4,733,511.87/2,778.80
  6. Step 6: Final answer
    x = 1,703.44

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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.