Home / 1,983.36-2,736.81-1,143.90

Finding the Fourth Proportional to 1,983.36, 2,736.81 and 1,143.90

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Solution

The fourth proportional to 1,983.36, 2,736.81 and 1,143.90 is: 1,578.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.36 : 2,736.81 = 1,143.90 : x
  2. Step 2: Convert to fraction form
    1,983.36/2,736.81 = 1,143.90/x
  3. Step 3: Cross multiply
    1,983.36x = 2,736.81 × 1,143.90
  4. Step 4: Simplify right side
    1,983.36x = 3,130,636.96
  5. Step 5: Solve for x
    x = 3,130,636.96/1,983.36
  6. Step 6: Final answer
    x = 1,578.45

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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.