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Finding the Fourth Proportional to 2,640.96, 3,962.48 and 2,425.68

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Solution

The fourth proportional to 2,640.96, 3,962.48 and 2,425.68 is: 3,639.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.96 : 3,962.48 = 2,425.68 : x
  2. Step 2: Convert to fraction form
    2,640.96/3,962.48 = 2,425.68/x
  3. Step 3: Cross multiply
    2,640.96x = 3,962.48 × 2,425.68
  4. Step 4: Simplify right side
    2,640.96x = 9,611,696.36
  5. Step 5: Solve for x
    x = 9,611,696.36/2,640.96
  6. Step 6: Final answer
    x = 3,639.47

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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.