Home / 1,983.42-2,735.91-1,284.80

Finding the Fourth Proportional to 1,983.42, 2,735.91 and 1,284.80

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Solution

The fourth proportional to 1,983.42, 2,735.91 and 1,284.80 is: 1,772.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.42 : 2,735.91 = 1,284.80 : x
  2. Step 2: Convert to fraction form
    1,983.42/2,735.91 = 1,284.80/x
  3. Step 3: Cross multiply
    1,983.42x = 2,735.91 × 1,284.80
  4. Step 4: Simplify right side
    1,983.42x = 3,515,083.49
  5. Step 5: Solve for x
    x = 3,515,083.49/1,983.42
  6. Step 6: Final answer
    x = 1,772.23

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1.5x scale

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.