Home / 3,939.08-5,436.18-2,261.03

Finding the Fourth Proportional to 3,939.08, 5,436.18 and 2,261.03

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Solution

The fourth proportional to 3,939.08, 5,436.18 and 2,261.03 is: 3,120.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.08 : 5,436.18 = 2,261.03 : x
  2. Step 2: Convert to fraction form
    3,939.08/5,436.18 = 2,261.03/x
  3. Step 3: Cross multiply
    3,939.08x = 5,436.18 × 2,261.03
  4. Step 4: Simplify right side
    3,939.08x = 12,291,338.88
  5. Step 5: Solve for x
    x = 12,291,338.88/3,939.08
  6. Step 6: Final answer
    x = 3,120.36

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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.