Home / 1,982.35-2,735.58-1,142.98

Finding the Fourth Proportional to 1,982.35, 2,735.58 and 1,142.98

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Solution

The fourth proportional to 1,982.35, 2,735.58 and 1,142.98 is: 1,577.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.35 : 2,735.58 = 1,142.98 : x
  2. Step 2: Convert to fraction form
    1,982.35/2,735.58 = 1,142.98/x
  3. Step 3: Cross multiply
    1,982.35x = 2,735.58 × 1,142.98
  4. Step 4: Simplify right side
    1,982.35x = 3,126,713.23
  5. Step 5: Solve for x
    x = 3,126,713.23/1,982.35
  6. Step 6: Final answer
    x = 1,577.28

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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.