Home / 3,723.15-5,137.74-2,129.70

Finding the Fourth Proportional to 3,723.15, 5,137.74 and 2,129.70

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Solution

The fourth proportional to 3,723.15, 5,137.74 and 2,129.70 is: 2,938.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.15 : 5,137.74 = 2,129.70 : x
  2. Step 2: Convert to fraction form
    3,723.15/5,137.74 = 2,129.70/x
  3. Step 3: Cross multiply
    3,723.15x = 5,137.74 × 2,129.70
  4. Step 4: Simplify right side
    3,723.15x = 10,941,844.88
  5. Step 5: Solve for x
    x = 10,941,844.88/3,723.15
  6. Step 6: Final answer
    x = 2,938.87

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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.