Home / 1,982.80-2,736.07-1,143.34

Finding the Fourth Proportional to 1,982.80, 2,736.07 and 1,143.34

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Solution

The fourth proportional to 1,982.80, 2,736.07 and 1,143.34 is: 1,577.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.80 : 2,736.07 = 1,143.34 : x
  2. Step 2: Convert to fraction form
    1,982.80/2,736.07 = 1,143.34/x
  3. Step 3: Cross multiply
    1,982.80x = 2,736.07 × 1,143.34
  4. Step 4: Simplify right side
    1,982.80x = 3,128,258.27
  5. Step 5: Solve for x
    x = 3,128,258.27/1,982.80
  6. Step 6: Final answer
    x = 1,577.70

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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.