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Finding the Fourth Proportional to 2,711.51, 4,067.28 and 763.73

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Solution

The fourth proportional to 2,711.51, 4,067.28 and 763.73 is: 1,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,711.51 : 4,067.28 = 763.73 : x
  2. Step 2: Convert to fraction form
    2,711.51/4,067.28 = 763.73/x
  3. Step 3: Cross multiply
    2,711.51x = 4,067.28 × 763.73
  4. Step 4: Simplify right side
    2,711.51x = 3,106,303.75
  5. Step 5: Solve for x
    x = 3,106,303.75/2,711.51
  6. Step 6: Final answer
    x = 1,145.60

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1.5x scale

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.