Home / 3,927.28-5,419.74-2,158.93

Finding the Fourth Proportional to 3,927.28, 5,419.74 and 2,158.93

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Solution

The fourth proportional to 3,927.28, 5,419.74 and 2,158.93 is: 2,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.28 : 5,419.74 = 2,158.93 : x
  2. Step 2: Convert to fraction form
    3,927.28/5,419.74 = 2,158.93/x
  3. Step 3: Cross multiply
    3,927.28x = 5,419.74 × 2,158.93
  4. Step 4: Simplify right side
    3,927.28x = 11,700,839.28
  5. Step 5: Solve for x
    x = 11,700,839.28/3,927.28
  6. Step 6: Final answer
    x = 2,979.37

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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.