Home / 3,739.21-5,160.13-2,145.43

Finding the Fourth Proportional to 3,739.21, 5,160.13 and 2,145.43

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Solution

The fourth proportional to 3,739.21, 5,160.13 and 2,145.43 is: 2,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,739.21 : 5,160.13 = 2,145.43 : x
  2. Step 2: Convert to fraction form
    3,739.21/5,160.13 = 2,145.43/x
  3. Step 3: Cross multiply
    3,739.21x = 5,160.13 × 2,145.43
  4. Step 4: Simplify right side
    3,739.21x = 11,070,679.44
  5. Step 5: Solve for x
    x = 11,070,679.44/3,739.21
  6. Step 6: Final answer
    x = 2,960.70

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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.