Home / 3,927.42-5,419.87-2,159.06

Finding the Fourth Proportional to 3,927.42, 5,419.87 and 2,159.06

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Solution

The fourth proportional to 3,927.42, 5,419.87 and 2,159.06 is: 2,979.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.42 : 5,419.87 = 2,159.06 : x
  2. Step 2: Convert to fraction form
    3,927.42/5,419.87 = 2,159.06/x
  3. Step 3: Cross multiply
    3,927.42x = 5,419.87 × 2,159.06
  4. Step 4: Simplify right side
    3,927.42x = 11,701,824.52
  5. Step 5: Solve for x
    x = 11,701,824.52/3,927.42
  6. Step 6: Final answer
    x = 2,979.52

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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.