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Finding the Fourth Proportional to 2,658.92, 3,990.15 and 927.54

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Solution

The fourth proportional to 2,658.92, 3,990.15 and 927.54 is: 1,391.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.92 : 3,990.15 = 927.54 : x
  2. Step 2: Convert to fraction form
    2,658.92/3,990.15 = 927.54/x
  3. Step 3: Cross multiply
    2,658.92x = 3,990.15 × 927.54
  4. Step 4: Simplify right side
    2,658.92x = 3,701,023.73
  5. Step 5: Solve for x
    x = 3,701,023.73/2,658.92
  6. Step 6: Final answer
    x = 1,391.93

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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.