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Finding the Fourth Proportional to 2,610.25, 3,915.60 and 662.45

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Solution

The fourth proportional to 2,610.25, 3,915.60 and 662.45 is: 993.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,610.25 : 3,915.60 = 662.45 : x
  2. Step 2: Convert to fraction form
    2,610.25/3,915.60 = 662.45/x
  3. Step 3: Cross multiply
    2,610.25x = 3,915.60 × 662.45
  4. Step 4: Simplify right side
    2,610.25x = 2,593,896.52
  5. Step 5: Solve for x
    x = 2,593,896.52/2,610.25
  6. Step 6: Final answer
    x = 993.74

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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.