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Finding the Fourth Proportional to 2,703.85, 4,056.03 and 756.05

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Solution

The fourth proportional to 2,703.85, 4,056.03 and 756.05 is: 1,134.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,703.85 : 4,056.03 = 756.05 : x
  2. Step 2: Convert to fraction form
    2,703.85/4,056.03 = 756.05/x
  3. Step 3: Cross multiply
    2,703.85x = 4,056.03 × 756.05
  4. Step 4: Simplify right side
    2,703.85x = 3,066,573.10
  5. Step 5: Solve for x
    x = 3,066,573.10/2,703.85
  6. Step 6: Final answer
    x = 1,134.15

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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.