Home / 3,927.43-5,419.85-2,159.03

Finding the Fourth Proportional to 3,927.43, 5,419.85 and 2,159.03

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Solution

The fourth proportional to 3,927.43, 5,419.85 and 2,159.03 is: 2,979.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.43 : 5,419.85 = 2,159.03 : x
  2. Step 2: Convert to fraction form
    3,927.43/5,419.85 = 2,159.03/x
  3. Step 3: Cross multiply
    3,927.43x = 5,419.85 × 2,159.03
  4. Step 4: Simplify right side
    3,927.43x = 11,701,607.95
  5. Step 5: Solve for x
    x = 11,701,607.95/3,927.43
  6. Step 6: Final answer
    x = 2,979.46

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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.