Home / 1,940.81-2,677.91-1,143.90

Finding the Fourth Proportional to 1,940.81, 2,677.91 and 1,143.90

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Solution

The fourth proportional to 1,940.81, 2,677.91 and 1,143.90 is: 1,578.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.81 : 2,677.91 = 1,143.90 : x
  2. Step 2: Convert to fraction form
    1,940.81/2,677.91 = 1,143.90/x
  3. Step 3: Cross multiply
    1,940.81x = 2,677.91 × 1,143.90
  4. Step 4: Simplify right side
    1,940.81x = 3,063,255.53
  5. Step 5: Solve for x
    x = 3,063,255.53/1,940.81
  6. Step 6: Final answer
    x = 1,578.34

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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.