Home / 1,983.15-2,736.86-1,143.86

Finding the Fourth Proportional to 1,983.15, 2,736.86 and 1,143.86

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Solution

The fourth proportional to 1,983.15, 2,736.86 and 1,143.86 is: 1,578.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.15 : 2,736.86 = 1,143.86 : x
  2. Step 2: Convert to fraction form
    1,983.15/2,736.86 = 1,143.86/x
  3. Step 3: Cross multiply
    1,983.15x = 2,736.86 × 1,143.86
  4. Step 4: Simplify right side
    1,983.15x = 3,130,565.28
  5. Step 5: Solve for x
    x = 3,130,565.28/1,983.15
  6. Step 6: Final answer
    x = 1,578.58

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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.