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Finding the Fourth Proportional to 2,680.57, 4,020.90 and 732.82

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Solution

The fourth proportional to 2,680.57, 4,020.90 and 732.82 is: 1,099.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.57 : 4,020.90 = 732.82 : x
  2. Step 2: Convert to fraction form
    2,680.57/4,020.90 = 732.82/x
  3. Step 3: Cross multiply
    2,680.57x = 4,020.90 × 732.82
  4. Step 4: Simplify right side
    2,680.57x = 2,946,595.94
  5. Step 5: Solve for x
    x = 2,946,595.94/2,680.57
  6. Step 6: Final answer
    x = 1,099.24

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1.5x scale

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.