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Finding the Fourth Proportional to 5,145.72, 7,718.58 and 2,067

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Solution

The fourth proportional to 5,145.72, 7,718.58 and 2,067 is: 3,100.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.72 : 7,718.58 = 2,067 : x
  2. Step 2: Convert to fraction form
    5,145.72/7,718.58 = 2,067/x
  3. Step 3: Cross multiply
    5,145.72x = 7,718.58 × 2,067
  4. Step 4: Simplify right side
    5,145.72x = 15,954,304.86
  5. Step 5: Solve for x
    x = 15,954,304.86/5,145.72
  6. Step 6: Final answer
    x = 3,100.50

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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.