Home / 3,739.25-5,160.20-2,145.98

Finding the Fourth Proportional to 3,739.25, 5,160.20 and 2,145.98

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Solution

The fourth proportional to 3,739.25, 5,160.20 and 2,145.98 is: 2,961.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,739.25 : 5,160.20 = 2,145.98 : x
  2. Step 2: Convert to fraction form
    3,739.25/5,160.20 = 2,145.98/x
  3. Step 3: Cross multiply
    3,739.25x = 5,160.20 × 2,145.98
  4. Step 4: Simplify right side
    3,739.25x = 11,073,649.47
  5. Step 5: Solve for x
    x = 11,073,649.47/3,739.25
  6. Step 6: Final answer
    x = 2,961.47

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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.