Home / 2,136.13-2,947.78-1,191.97

Finding the Fourth Proportional to 2,136.13, 2,947.78 and 1,191.97

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Solution

The fourth proportional to 2,136.13, 2,947.78 and 1,191.97 is: 1,644.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.13 : 2,947.78 = 1,191.97 : x
  2. Step 2: Convert to fraction form
    2,136.13/2,947.78 = 1,191.97/x
  3. Step 3: Cross multiply
    2,136.13x = 2,947.78 × 1,191.97
  4. Step 4: Simplify right side
    2,136.13x = 3,513,654.98
  5. Step 5: Solve for x
    x = 3,513,654.98/2,136.13
  6. Step 6: Final answer
    x = 1,644.87

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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.