Home / 1,951.68-2,692.56-1,288.92

Finding the Fourth Proportional to 1,951.68, 2,692.56 and 1,288.92

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Solution

The fourth proportional to 1,951.68, 2,692.56 and 1,288.92 is: 1,778.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.68 : 2,692.56 = 1,288.92 : x
  2. Step 2: Convert to fraction form
    1,951.68/2,692.56 = 1,288.92/x
  3. Step 3: Cross multiply
    1,951.68x = 2,692.56 × 1,288.92
  4. Step 4: Simplify right side
    1,951.68x = 3,470,494.44
  5. Step 5: Solve for x
    x = 3,470,494.44/1,951.68
  6. Step 6: Final answer
    x = 1,778.21

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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.