Home / 3,940.09-5,437.27-2,171.77

Finding the Fourth Proportional to 3,940.09, 5,437.27 and 2,171.77

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Solution

The fourth proportional to 3,940.09, 5,437.27 and 2,171.77 is: 2,997.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.09 : 5,437.27 = 2,171.77 : x
  2. Step 2: Convert to fraction form
    3,940.09/5,437.27 = 2,171.77/x
  3. Step 3: Cross multiply
    3,940.09x = 5,437.27 × 2,171.77
  4. Step 4: Simplify right side
    3,940.09x = 11,808,499.87
  5. Step 5: Solve for x
    x = 11,808,499.87/3,940.09
  6. Step 6: Final answer
    x = 2,997.01

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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.