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Finding the Fourth Proportional to 1,768.57, 2,652.50 and 1,680.75

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Solution

The fourth proportional to 1,768.57, 2,652.50 and 1,680.75 is: 2,520.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.57 : 2,652.50 = 1,680.75 : x
  2. Step 2: Convert to fraction form
    1,768.57/2,652.50 = 1,680.75/x
  3. Step 3: Cross multiply
    1,768.57x = 2,652.50 × 1,680.75
  4. Step 4: Simplify right side
    1,768.57x = 4,458,193.58
  5. Step 5: Solve for x
    x = 4,458,193.58/1,768.57
  6. Step 6: Final answer
    x = 2,520.79

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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.