Home / 3,892.56-5,371.80-2,124.18

Finding the Fourth Proportional to 3,892.56, 5,371.80 and 2,124.18

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Solution

The fourth proportional to 3,892.56, 5,371.80 and 2,124.18 is: 2,931.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.56 : 5,371.80 = 2,124.18 : x
  2. Step 2: Convert to fraction form
    3,892.56/5,371.80 = 2,124.18/x
  3. Step 3: Cross multiply
    3,892.56x = 5,371.80 × 2,124.18
  4. Step 4: Simplify right side
    3,892.56x = 11,410,670.12
  5. Step 5: Solve for x
    x = 11,410,670.12/3,892.56
  6. Step 6: Final answer
    x = 2,931.41

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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.