Home / 3,892.16-5,371.15-2,123.75

Finding the Fourth Proportional to 3,892.16, 5,371.15 and 2,123.75

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Solution

The fourth proportional to 3,892.16, 5,371.15 and 2,123.75 is: 2,930.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.16 : 5,371.15 = 2,123.75 : x
  2. Step 2: Convert to fraction form
    3,892.16/5,371.15 = 2,123.75/x
  3. Step 3: Cross multiply
    3,892.16x = 5,371.15 × 2,123.75
  4. Step 4: Simplify right side
    3,892.16x = 11,406,979.81
  5. Step 5: Solve for x
    x = 11,406,979.81/3,892.16
  6. Step 6: Final answer
    x = 2,930.76

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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.