Home / 1,381.19-2,079.14-1,190.43

Finding the Fourth Proportional to 1,381.19, 2,079.14 and 1,190.43

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Solution

The fourth proportional to 1,381.19, 2,079.14 and 1,190.43 is: 1,791.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381.19 : 2,079.14 = 1,190.43 : x
  2. Step 2: Convert to fraction form
    1,381.19/2,079.14 = 1,190.43/x
  3. Step 3: Cross multiply
    1,381.19x = 2,079.14 × 1,190.43
  4. Step 4: Simplify right side
    1,381.19x = 2,475,064.68
  5. Step 5: Solve for x
    x = 2,475,064.68/1,381.19
  6. Step 6: Final answer
    x = 1,791.99

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.