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Finding the Fourth Proportional to 8,395.43, 12,589.86 and 2,847.74

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Solution

The fourth proportional to 8,395.43, 12,589.86 and 2,847.74 is: 4,270.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,395.43 : 12,589.86 = 2,847.74 : x
  2. Step 2: Convert to fraction form
    8,395.43/12,589.86 = 2,847.74/x
  3. Step 3: Cross multiply
    8,395.43x = 12,589.86 × 2,847.74
  4. Step 4: Simplify right side
    8,395.43x = 35,852,647.92
  5. Step 5: Solve for x
    x = 35,852,647.92/8,395.43
  6. Step 6: Final answer
    x = 4,270.50

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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.