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Finding the Fourth Proportional to 2,610.73, 3,915.78 and 662.95

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Solution

The fourth proportional to 2,610.73, 3,915.78 and 662.95 is: 994.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,610.73 : 3,915.78 = 662.95 : x
  2. Step 2: Convert to fraction form
    2,610.73/3,915.78 = 662.95/x
  3. Step 3: Cross multiply
    2,610.73x = 3,915.78 × 662.95
  4. Step 4: Simplify right side
    2,610.73x = 2,595,966.35
  5. Step 5: Solve for x
    x = 2,595,966.35/2,610.73
  6. Step 6: Final answer
    x = 994.35

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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.