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Finding the Fourth Proportional to 2,906.88, 4,360.56 and 2,759.28

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Solution

The fourth proportional to 2,906.88, 4,360.56 and 2,759.28 is: 4,139.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,906.88 : 4,360.56 = 2,759.28 : x
  2. Step 2: Convert to fraction form
    2,906.88/4,360.56 = 2,759.28/x
  3. Step 3: Cross multiply
    2,906.88x = 4,360.56 × 2,759.28
  4. Step 4: Simplify right side
    2,906.88x = 12,032,006.00
  5. Step 5: Solve for x
    x = 12,032,006.00/2,906.88
  6. Step 6: Final answer
    x = 4,139.15

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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.