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Finding the Fourth Proportional to 2,757.90, 4,135.81 and 1,113.88

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Solution

The fourth proportional to 2,757.90, 4,135.81 and 1,113.88 is: 1,670.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.90 : 4,135.81 = 1,113.88 : x
  2. Step 2: Convert to fraction form
    2,757.90/4,135.81 = 1,113.88/x
  3. Step 3: Cross multiply
    2,757.90x = 4,135.81 × 1,113.88
  4. Step 4: Simplify right side
    2,757.90x = 4,606,796.04
  5. Step 5: Solve for x
    x = 4,606,796.04/2,757.90
  6. Step 6: Final answer
    x = 1,670.40

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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.