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Finding the Fourth Proportional to 2,911.28, 4,334 and 2,893.98

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Solution

The fourth proportional to 2,911.28, 4,334 and 2,893.98 is: 4,308.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.28 : 4,334 = 2,893.98 : x
  2. Step 2: Convert to fraction form
    2,911.28/4,334 = 2,893.98/x
  3. Step 3: Cross multiply
    2,911.28x = 4,334 × 2,893.98
  4. Step 4: Simplify right side
    2,911.28x = 12,542,509.32
  5. Step 5: Solve for x
    x = 12,542,509.32/2,911.28
  6. Step 6: Final answer
    x = 4,308.25

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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.