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Finding the Fourth Proportional to 2,705.04, 4,056.82 and 757.36

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Solution

The fourth proportional to 2,705.04, 4,056.82 and 757.36 is: 1,135.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,705.04 : 4,056.82 = 757.36 : x
  2. Step 2: Convert to fraction form
    2,705.04/4,056.82 = 757.36/x
  3. Step 3: Cross multiply
    2,705.04x = 4,056.82 × 757.36
  4. Step 4: Simplify right side
    2,705.04x = 3,072,473.20
  5. Step 5: Solve for x
    x = 3,072,473.20/2,705.04
  6. Step 6: Final answer
    x = 1,135.83

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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.