Home / 3,712.11-5,129.22-2,921.71

Finding the Fourth Proportional to 3,712.11, 5,129.22 and 2,921.71

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Solution

The fourth proportional to 3,712.11, 5,129.22 and 2,921.71 is: 4,037.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.11 : 5,129.22 = 2,921.71 : x
  2. Step 2: Convert to fraction form
    3,712.11/5,129.22 = 2,921.71/x
  3. Step 3: Cross multiply
    3,712.11x = 5,129.22 × 2,921.71
  4. Step 4: Simplify right side
    3,712.11x = 14,986,093.37
  5. Step 5: Solve for x
    x = 14,986,093.37/3,712.11
  6. Step 6: Final answer
    x = 4,037.08

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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.