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Finding the Fourth Proportional to 2,700.75, 4,051.38 and 752.97

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Solution

The fourth proportional to 2,700.75, 4,051.38 and 752.97 is: 1,129.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,700.75 : 4,051.38 = 752.97 : x
  2. Step 2: Convert to fraction form
    2,700.75/4,051.38 = 752.97/x
  3. Step 3: Cross multiply
    2,700.75x = 4,051.38 × 752.97
  4. Step 4: Simplify right side
    2,700.75x = 3,050,567.60
  5. Step 5: Solve for x
    x = 3,050,567.60/2,700.75
  6. Step 6: Final answer
    x = 1,129.53

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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.