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Finding the Fourth Proportional to 2,640.60, 3,954.06 and 1,772.28

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Solution

The fourth proportional to 2,640.60, 3,954.06 and 1,772.28 is: 2,653.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.60 : 3,954.06 = 1,772.28 : x
  2. Step 2: Convert to fraction form
    2,640.60/3,954.06 = 1,772.28/x
  3. Step 3: Cross multiply
    2,640.60x = 3,954.06 × 1,772.28
  4. Step 4: Simplify right side
    2,640.60x = 7,007,701.46
  5. Step 5: Solve for x
    x = 7,007,701.46/2,640.60
  6. Step 6: Final answer
    x = 2,653.83

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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.