Home / 1,983.77-2,976.36-1,205.36

Finding the Fourth Proportional to 1,983.77, 2,976.36 and 1,205.36

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Solution

The fourth proportional to 1,983.77, 2,976.36 and 1,205.36 is: 1,808.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.77 : 2,976.36 = 1,205.36 : x
  2. Step 2: Convert to fraction form
    1,983.77/2,976.36 = 1,205.36/x
  3. Step 3: Cross multiply
    1,983.77x = 2,976.36 × 1,205.36
  4. Step 4: Simplify right side
    1,983.77x = 3,587,564.38
  5. Step 5: Solve for x
    x = 3,587,564.38/1,983.77
  6. Step 6: Final answer
    x = 1,808.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.