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Finding the Fourth Proportional to 9,125.87, 13,690.19 and 3,860.89

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Solution

The fourth proportional to 9,125.87, 13,690.19 and 3,860.89 is: 5,791.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,125.87 : 13,690.19 = 3,860.89 : x
  2. Step 2: Convert to fraction form
    9,125.87/13,690.19 = 3,860.89/x
  3. Step 3: Cross multiply
    9,125.87x = 13,690.19 × 3,860.89
  4. Step 4: Simplify right side
    9,125.87x = 52,856,293.10
  5. Step 5: Solve for x
    x = 52,856,293.10/9,125.87
  6. Step 6: Final answer
    x = 5,791.92

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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.