Home / 3,892.11-5,371.09-2,123.71

Finding the Fourth Proportional to 3,892.11, 5,371.09 and 2,123.71

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Solution

The fourth proportional to 3,892.11, 5,371.09 and 2,123.71 is: 2,930.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.11 : 5,371.09 = 2,123.71 : x
  2. Step 2: Convert to fraction form
    3,892.11/5,371.09 = 2,123.71/x
  3. Step 3: Cross multiply
    3,892.11x = 5,371.09 × 2,123.71
  4. Step 4: Simplify right side
    3,892.11x = 11,406,618.81
  5. Step 5: Solve for x
    x = 11,406,618.81/3,892.11
  6. Step 6: Final answer
    x = 2,930.71

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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.