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Finding the Fourth Proportional to 6,125.20, 8,452.20 and 4,238.80

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Solution

The fourth proportional to 6,125.20, 8,452.20 and 4,238.80 is: 5,849.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,125.20 : 8,452.20 = 4,238.80 : x
  2. Step 2: Convert to fraction form
    6,125.20/8,452.20 = 4,238.80/x
  3. Step 3: Cross multiply
    6,125.20x = 8,452.20 × 4,238.80
  4. Step 4: Simplify right side
    6,125.20x = 35,827,185.36
  5. Step 5: Solve for x
    x = 35,827,185.36/6,125.20
  6. Step 6: Final answer
    x = 5,849.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.