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Finding the Fourth Proportional to 3,975.02, 5,474.44 and 3,888.92

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Solution

The fourth proportional to 3,975.02, 5,474.44 and 3,888.92 is: 5,355.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.02 : 5,474.44 = 3,888.92 : x
  2. Step 2: Convert to fraction form
    3,975.02/5,474.44 = 3,888.92/x
  3. Step 3: Cross multiply
    3,975.02x = 5,474.44 × 3,888.92
  4. Step 4: Simplify right side
    3,975.02x = 21,289,659.20
  5. Step 5: Solve for x
    x = 21,289,659.20/3,975.02
  6. Step 6: Final answer
    x = 5,355.86

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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.