Home / 2,179.90-3,265.05-1,936.70

Finding the Fourth Proportional to 2,179.90, 3,265.05 and 1,936.70

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Solution

The fourth proportional to 2,179.90, 3,265.05 and 1,936.70 is: 2,900.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.90 : 3,265.05 = 1,936.70 : x
  2. Step 2: Convert to fraction form
    2,179.90/3,265.05 = 1,936.70/x
  3. Step 3: Cross multiply
    2,179.90x = 3,265.05 × 1,936.70
  4. Step 4: Simplify right side
    2,179.90x = 6,323,422.34
  5. Step 5: Solve for x
    x = 6,323,422.34/2,179.90
  6. Step 6: Final answer
    x = 2,900.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.