Home / 3,179.79-4,387.64-1,816.95

Finding the Fourth Proportional to 3,179.79, 4,387.64 and 1,816.95

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Solution

The fourth proportional to 3,179.79, 4,387.64 and 1,816.95 is: 2,507.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.79 : 4,387.64 = 1,816.95 : x
  2. Step 2: Convert to fraction form
    3,179.79/4,387.64 = 1,816.95/x
  3. Step 3: Cross multiply
    3,179.79x = 4,387.64 × 1,816.95
  4. Step 4: Simplify right side
    3,179.79x = 7,972,129.87
  5. Step 5: Solve for x
    x = 7,972,129.87/3,179.79
  6. Step 6: Final answer
    x = 2,507.12

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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.