Home / 2,134.08-3,185.87-1,981.80

Finding the Fourth Proportional to 2,134.08, 3,185.87 and 1,981.80

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Solution

The fourth proportional to 2,134.08, 3,185.87 and 1,981.80 is: 2,958.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,134.08 : 3,185.87 = 1,981.80 : x
  2. Step 2: Convert to fraction form
    2,134.08/3,185.87 = 1,981.80/x
  3. Step 3: Cross multiply
    2,134.08x = 3,185.87 × 1,981.80
  4. Step 4: Simplify right side
    2,134.08x = 6,313,747.26
  5. Step 5: Solve for x
    x = 6,313,747.26/2,134.08
  6. Step 6: Final answer
    x = 2,958.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.