Home / 4,255.48-6,380.28-2,171.44

Finding the Fourth Proportional to 4,255.48, 6,380.28 and 2,171.44

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Solution

The fourth proportional to 4,255.48, 6,380.28 and 2,171.44 is: 3,255.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,255.48 : 6,380.28 = 2,171.44 : x
  2. Step 2: Convert to fraction form
    4,255.48/6,380.28 = 2,171.44/x
  3. Step 3: Cross multiply
    4,255.48x = 6,380.28 × 2,171.44
  4. Step 4: Simplify right side
    4,255.48x = 13,854,395.20
  5. Step 5: Solve for x
    x = 13,854,395.20/4,255.48
  6. Step 6: Final answer
    x = 3,255.66

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1.5x scale

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.