Home / 8,639.89-12,960.05-3,093.62

Finding the Fourth Proportional to 8,639.89, 12,960.05 and 3,093.62

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Solution

The fourth proportional to 8,639.89, 12,960.05 and 3,093.62 is: 4,640.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.89 : 12,960.05 = 3,093.62 : x
  2. Step 2: Convert to fraction form
    8,639.89/12,960.05 = 3,093.62/x
  3. Step 3: Cross multiply
    8,639.89x = 12,960.05 × 3,093.62
  4. Step 4: Simplify right side
    8,639.89x = 40,093,389.61
  5. Step 5: Solve for x
    x = 40,093,389.61/8,639.89
  6. Step 6: Final answer
    x = 4,640.50

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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.