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Finding the Fourth Proportional to 8,585.87, 12,874.08 and 2,661.12

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Solution

The fourth proportional to 8,585.87, 12,874.08 and 2,661.12 is: 3,990.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,585.87 : 12,874.08 = 2,661.12 : x
  2. Step 2: Convert to fraction form
    8,585.87/12,874.08 = 2,661.12/x
  3. Step 3: Cross multiply
    8,585.87x = 12,874.08 × 2,661.12
  4. Step 4: Simplify right side
    8,585.87x = 34,259,432.93
  5. Step 5: Solve for x
    x = 34,259,432.93/8,585.87
  6. Step 6: Final answer
    x = 3,990.21

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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.