Home / 1,936.62-2,672.70-1,139.73

Finding the Fourth Proportional to 1,936.62, 2,672.70 and 1,139.73

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Solution

The fourth proportional to 1,936.62, 2,672.70 and 1,139.73 is: 1,572.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.62 : 2,672.70 = 1,139.73 : x
  2. Step 2: Convert to fraction form
    1,936.62/2,672.70 = 1,139.73/x
  3. Step 3: Cross multiply
    1,936.62x = 2,672.70 × 1,139.73
  4. Step 4: Simplify right side
    1,936.62x = 3,046,156.37
  5. Step 5: Solve for x
    x = 3,046,156.37/1,936.62
  6. Step 6: Final answer
    x = 1,572.92

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1.5x scale

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.