Home / 3,738.08-5,157.39-2,165.87

Finding the Fourth Proportional to 3,738.08, 5,157.39 and 2,165.87

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Solution

The fourth proportional to 3,738.08, 5,157.39 and 2,165.87 is: 2,988.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,738.08 : 5,157.39 = 2,165.87 : x
  2. Step 2: Convert to fraction form
    3,738.08/5,157.39 = 2,165.87/x
  3. Step 3: Cross multiply
    3,738.08x = 5,157.39 × 2,165.87
  4. Step 4: Simplify right side
    3,738.08x = 11,170,199.66
  5. Step 5: Solve for x
    x = 11,170,199.66/3,738.08
  6. Step 6: Final answer
    x = 2,988.22

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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.