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Finding the Fourth Proportional to 2,610.43, 3,915.87 and 662.63

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Solution

The fourth proportional to 2,610.43, 3,915.87 and 662.63 is: 993.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,610.43 : 3,915.87 = 662.63 : x
  2. Step 2: Convert to fraction form
    2,610.43/3,915.87 = 662.63/x
  3. Step 3: Cross multiply
    2,610.43x = 3,915.87 × 662.63
  4. Step 4: Simplify right side
    2,610.43x = 2,594,750.87
  5. Step 5: Solve for x
    x = 2,594,750.87/2,610.43
  6. Step 6: Final answer
    x = 993.99

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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.