Home / 1,982.28-2,734.88-1,235.64

Finding the Fourth Proportional to 1,982.28, 2,734.88 and 1,235.64

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Solution

The fourth proportional to 1,982.28, 2,734.88 and 1,235.64 is: 1,704.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.28 : 2,734.88 = 1,235.64 : x
  2. Step 2: Convert to fraction form
    1,982.28/2,734.88 = 1,235.64/x
  3. Step 3: Cross multiply
    1,982.28x = 2,734.88 × 1,235.64
  4. Step 4: Simplify right side
    1,982.28x = 3,379,327.12
  5. Step 5: Solve for x
    x = 3,379,327.12/1,982.28
  6. Step 6: Final answer
    x = 1,704.77

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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.