Home / 1,936.80-2,898.36-1,206.72

Finding the Fourth Proportional to 1,936.80, 2,898.36 and 1,206.72

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Solution

The fourth proportional to 1,936.80, 2,898.36 and 1,206.72 is: 1,805.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.80 : 2,898.36 = 1,206.72 : x
  2. Step 2: Convert to fraction form
    1,936.80/2,898.36 = 1,206.72/x
  3. Step 3: Cross multiply
    1,936.80x = 2,898.36 × 1,206.72
  4. Step 4: Simplify right side
    1,936.80x = 3,497,508.98
  5. Step 5: Solve for x
    x = 3,497,508.98/1,936.80
  6. Step 6: Final answer
    x = 1,805.82

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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.