Home / 1,991.34-2,760.57-1,885.95

Finding the Fourth Proportional to 1,991.34, 2,760.57 and 1,885.95

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Solution

The fourth proportional to 1,991.34, 2,760.57 and 1,885.95 is: 2,614.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.34 : 2,760.57 = 1,885.95 : x
  2. Step 2: Convert to fraction form
    1,991.34/2,760.57 = 1,885.95/x
  3. Step 3: Cross multiply
    1,991.34x = 2,760.57 × 1,885.95
  4. Step 4: Simplify right side
    1,991.34x = 5,206,296.99
  5. Step 5: Solve for x
    x = 5,206,296.99/1,991.34
  6. Step 6: Final answer
    x = 2,614.47

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.