Home / 3,927.05-5,419.67-2,159.02

Finding the Fourth Proportional to 3,927.05, 5,419.67 and 2,159.02

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Solution

The fourth proportional to 3,927.05, 5,419.67 and 2,159.02 is: 2,979.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.05 : 5,419.67 = 2,159.02 : x
  2. Step 2: Convert to fraction form
    3,927.05/5,419.67 = 2,159.02/x
  3. Step 3: Cross multiply
    3,927.05x = 5,419.67 × 2,159.02
  4. Step 4: Simplify right side
    3,927.05x = 11,701,175.92
  5. Step 5: Solve for x
    x = 11,701,175.92/3,927.05
  6. Step 6: Final answer
    x = 2,979.64

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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.