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Finding the Fourth Proportional to 2,703.12, 4,054.74 and 755.28

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Solution

The fourth proportional to 2,703.12, 4,054.74 and 755.28 is: 1,132.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,703.12 : 4,054.74 = 755.28 : x
  2. Step 2: Convert to fraction form
    2,703.12/4,054.74 = 755.28/x
  3. Step 3: Cross multiply
    2,703.12x = 4,054.74 × 755.28
  4. Step 4: Simplify right side
    2,703.12x = 3,062,464.03
  5. Step 5: Solve for x
    x = 3,062,464.03/2,703.12
  6. Step 6: Final answer
    x = 1,132.94

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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.