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Finding the Fourth Proportional to 2,757.24, 4,135.88 and 705.24

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Solution

The fourth proportional to 2,757.24, 4,135.88 and 705.24 is: 1,057.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.24 : 4,135.88 = 705.24 : x
  2. Step 2: Convert to fraction form
    2,757.24/4,135.88 = 705.24/x
  3. Step 3: Cross multiply
    2,757.24x = 4,135.88 × 705.24
  4. Step 4: Simplify right side
    2,757.24x = 2,916,788.01
  5. Step 5: Solve for x
    x = 2,916,788.01/2,757.24
  6. Step 6: Final answer
    x = 1,057.87

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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.