Home / 3,118.85-4,680.60-1,271.24

Finding the Fourth Proportional to 3,118.85, 4,680.60 and 1,271.24

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Solution

The fourth proportional to 3,118.85, 4,680.60 and 1,271.24 is: 1,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.85 : 4,680.60 = 1,271.24 : x
  2. Step 2: Convert to fraction form
    3,118.85/4,680.60 = 1,271.24/x
  3. Step 3: Cross multiply
    3,118.85x = 4,680.60 × 1,271.24
  4. Step 4: Simplify right side
    3,118.85x = 5,950,142.54
  5. Step 5: Solve for x
    x = 5,950,142.54/3,118.85
  6. Step 6: Final answer
    x = 1,907.80

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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.