Home / 3,892.41-5,371.65-2,124.09

Finding the Fourth Proportional to 3,892.41, 5,371.65 and 2,124.09

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Solution

The fourth proportional to 3,892.41, 5,371.65 and 2,124.09 is: 2,931.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.41 : 5,371.65 = 2,124.09 : x
  2. Step 2: Convert to fraction form
    3,892.41/5,371.65 = 2,124.09/x
  3. Step 3: Cross multiply
    3,892.41x = 5,371.65 × 2,124.09
  4. Step 4: Simplify right side
    3,892.41x = 11,409,868.05
  5. Step 5: Solve for x
    x = 11,409,868.05/3,892.41
  6. Step 6: Final answer
    x = 2,931.31

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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.