Home / 4,147.80-6,221.55-3,415.17

Finding the Fourth Proportional to 4,147.80, 6,221.55 and 3,415.17

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Solution

The fourth proportional to 4,147.80, 6,221.55 and 3,415.17 is: 5,122.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,147.80 : 6,221.55 = 3,415.17 : x
  2. Step 2: Convert to fraction form
    4,147.80/6,221.55 = 3,415.17/x
  3. Step 3: Cross multiply
    4,147.80x = 6,221.55 × 3,415.17
  4. Step 4: Simplify right side
    4,147.80x = 21,247,650.91
  5. Step 5: Solve for x
    x = 21,247,650.91/4,147.80
  6. Step 6: Final answer
    x = 5,122.63

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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.