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Finding the Fourth Proportional to 2,634.40, 3,928.07 and 2,539.54

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Solution

The fourth proportional to 2,634.40, 3,928.07 and 2,539.54 is: 3,786.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,634.40 : 3,928.07 = 2,539.54 : x
  2. Step 2: Convert to fraction form
    2,634.40/3,928.07 = 2,539.54/x
  3. Step 3: Cross multiply
    2,634.40x = 3,928.07 × 2,539.54
  4. Step 4: Simplify right side
    2,634.40x = 9,975,490.89
  5. Step 5: Solve for x
    x = 9,975,490.89/2,634.40
  6. Step 6: Final answer
    x = 3,786.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.